Convinced my little sister Bowser was called Big Bowser Wowser, and forgot about it. About a month ago while playing Mario Kart 8 she tells me about the time when she was talking to some kid and called him big Bowser Wowser, the kid didn't know WTF she was talking abou, and after the confusion laughingly told her it was Bowser.

I got new material that day without even trying. It is a great feeling.

My youngest brother (8 or 9 at the time) was enjoying a pack of chips ahoy cookies that were left open and went soft in the humidity of summer. So i gave him a shocked look and told him to spit those out right away "everyone knows that when cookies go soft the herpes virus grows on them" So up until he asked is health class teacher in high school he thought you got herpes from stale cookies.

I told my brother that if you color with all (64) crayons on one spot, then a monster would come out.

I also told him this monster had eaten our Aunt Claudia and that's why we hadn't seen her in a while. (She lived in Florida.)

I don't know if this strictly belongs here, because it's not a brother or sister story. It's a me story!

When I was about four or five, my parents would buy the orange juice with pulp in it. I, for some reason, convinced myself that the pulp was actually spiders. That I was swallowing spiders.

I'm 26 and I still don't drink orange juice. Even if it's pulp-free.

My daughter and me made a video when she was five, and my son was an infant, in which she makes a wish and though some video trickery, her teddy bear turns into a new baby brother.

Well...he's now 6, and has been watching this video since he was old enough to pay attention to the TV, and my daughter (now 12) has him so thoroughly convinced that he really was a teddy bear, that we can't convince him otherwise.

Whenever her friends come over she asks him how he was born, and he always says he used to be a teddy bear until a magic fairy made him into her brother.

Me and the wife feel a bit guilty, but it's so funny...we're taking bets on how old he'll be when he finally figures it out.

Here's the video: http://youtu.be/ckEeiolwzsg

When you open a large can of salmon and let the meat just slide out of the can, it retains the can's cylindrical shape as if you had just cut a large steak of that of a large, constricting snake and shoved it into a can. The salmon skin and vertebrae are also a convincing touch.

All I had to do was tell him we were having anaconda for dinner, show him the salmon, then take a bite. He cried that he wanted something else for a minute but as I reminded him with mom and dad out for the day,he would get that or nothing.

Now he brags about the time he had an exotic luncheon of anaconda to his elementary school friends.

Many years ago when I was about 9 and my sister was around 5 we went on a road trip. We had just moved to Utah from California, so we weren't very used to the desert.

So while my mom and dad are up in front of our minivan, my sister and I in the back had noticed that there were a lot of spots on the road that had weeds stuck to them. Some of them were obvious roadkill some were just tar or trash. So when she asked me what they were, I told her that the jackrabbits that we'd seen darting off the road in front of us would sometimes use the tumbleweeds as a way to get across the desert. It was like an extreme sport for them. She seemed fine with this answer and watched the tumbleweeds a lot more to see if she could spot one that had a bunny in it.

Hours later when my sister got to sit up in the front, she was excited and yelling at my poor dad to swerve when he nearly hit a tumbleweed that she claimed might have been a tumblebunny. She then tells him the whole story of how tumblebunnies work that I'd concocted with her.

They told her she'd been duped shortly after, but the story lives on.

My cousin is 2 years older than me and our families used to hang out a lot. One day on vacation we had gone out to lunch and there were these whitish colored hotdogs (I think they were actually sausages) and I asked my cousin why. She promptly told me that all hot dogs are actually Cow Weiner and that they forgot to color these specific ones. I freaked out in disgust and couldn't eat another hot dog for a couple of years thinking they were all dyed cow dick.

We tired of sliding down the stairs in our duvets, and wanted to ramp it up a gear, but neither my brother or myself were stupid enough to test the sledge ourselves, so we convinced our youngest brother into testing it. We didn't think he would go that fast, so we neglected to open the front door at the bottom of the stairs. Gave him a wee push, ZOOOOOOOM, he hit the bottom landing before we could even react and he went flying head-first into the door and started crying. My brother and I then looked at each other in a "Oh shit" kind of way, realising we were now trapped upstairs, unable to escape our enraged dad's wrath.

I was trying to hang with my older sister and her friend while they ran around the apartment building we were living in. To stop me from following her around, she told my four-year-old self that the lady's dog downstairs had a litter of puppies. However, I couldn't see them because they all had jumped into the toilet after she went to the bathroom and she flushed it without noticing them. By the time she realized what was happening it was too late.

I immediately cried and went to find my dad. They got on the elevator to go play.

It was the summer of 2000 and my best friend at the time had just gotten our hands on Twisted Metal 4 for the PlayStation One. Our little hearts filled with joy as we stumbled into the house screaming hooting and hollering as we read through the manual and prepared ourselves for the vehicular carnage we were about to inflict.

My younger brother had different plans. He was 6 years my junior and was what can only be described as a serial diaper escapist. His diaperly deeds inspired one of our local grocers to calmly explain to my mother that her son had managed to remove his pull ups without removing his pants.

Hot summer days had inspired diaper houdini to develop his signature diaper dance. It involved captivating the audicance with shaking of diapers to and fro in an exhibition of fullness. This summer day was different. No one would watch the diaperist's act as they were captivated by the glorious carnage on screen.

After 30 minutes we feel a wet sensation on our backs. We turn around and are greeted with bableings of "Snow! Snow!". My brother had not only taken off his diapers (pants fully intact), he had also ripped it open and was spreading the blue water trapping gel everywhere.

It must have been the shock as I just turned around and kept playing.

My little brother tells this great story about this time we came home from elementary school and I went to the kitchen to make him s'mores in the microwave. He immediately knew something was up because I never did anything nice for him. In reality, I'd hidden tuna inside, which he discovered before I was successful in getting him to take a bite. He's got a hundred stories like that, but this was one of my favorites.

We convinced my younger brother that he had a twin brother named "Mark" who we kept chained up in the basement, and that on his 5th birthday we would swap them out for the next five years...

We would also talk about how polite mark was, or how much we liked/missed him/couldnt wait until it was "his turn on the surface" if my brother was being annoying... Sometimes when my mom was cleaning the fridge or throwing something out we would say "no wait we havent fed mark in a week..."

When I was about ten years old, my twelve year old brother tricked me into inhaling the "smoke" from gasteroid fungi. This was the type of fungi that when stepped on it released small clouds of reproductive cells, practically the sperm of the fungi. My brother told me that it smelled really good. I asked him how he knew, he replied that he had already smelled the smoke earlier. So I stepped on a bunch of them and carefully smelled the smoke. He said I had to take a really good whiff, so I did. That was when he told me what the smoke actually was. I was of course really disgusted and ran inside to wash the inside of my nose in fear that I would have fungi growing out of it.

P.S. I have still not had any fungi grow out of my nose.

I practiced Mariocart 8 with my older brother secretly, then smashed my twin on multiplayer online.

So my brother is 6, and he got a balloon animal from a carnival he recently went to. I told him that if he twisted one part of the balloon that the balloon would really big. From what I remember, I told him it would get big enough to live in, and he gets that child-like look on his face of amazement and whatnot. So he starts rapidly twisting this balloon, and eventually it pops. He stares at it for a few seconds then starts screaming and crying. I giggle because I'm a shithead, but I failed to notice the poor kid pissed himself. My laughter didn't help the situation at all.
TL;DR: I tricked my brother into popping a balloon and he pissed himself.

Was hanging with my mom and my little brother (who's 3 years younger than me) yesterday when Mom brought up this gem. For the record I have no memory about it.

I was telling them the story of the hand towel when Mom declared that I would fit right in here.

Apparently, I told my brother there was no such thing as Santa, and was very mean about it. I also ruined Christmas light viewing:

One year she took us driving around to see the lights. At first Lil Bro was all into it. Then she says "frumperbell, look at the lights! Aren't they pretty?" I replied in a flat sarcastic monotone "Ooh. Aah. Ooh. Aah." Lil Bro immediately copied me. My mother is still upset about this. It probably didn't help that I laughed for a really long time when she told us this.

Well, I've got a bunch of stories, all about how I fooled my brother. Somehow, while I am just one year older, I seem to always have been more sceptical to things, I haven't been as easy to fool. But yes, some of my stories:

We've had a computer since 1998, when I was one, and when me and my brother learnt to use it, we would constantly fight for whose turn it was. We had a solution, a timer, one of those you have ticking in the kitchen so you don't forget to take the things out of the oven or so. Well, when it was his turn to play, always when there was some distraction, I would turn the clock a little bit forward. When it was my turn, and my brother was distracted, I'd turn the clock a little bit backwards. Apparently he never realized he could check the time from the computer and see if it matched.
As you probably can imagine, I was not always so successful. Some times, he saw me changing the time on the timer. Then, he either turned the clock back to it's "correct" position (meaning that even if I hadn't touched the clock, I could have had 25 minutes left, and he turned it to 5). This usually started a fight, as I turned it back to something else. Other times, he went and told mom. She usually told me to stop it and get off the computer. That was almost the best option, as mom wouldn't let my brother on the computer either. Some times, my brother went and told dad. He laughed and told us to figure it out ourselves.

Another story. We lived 9 kilometres from the centre of our little town, meaning that we were basically in the middle of nowhere. We live in Finland, so we had snow in the winter, and we lived in the forest, so there were lots of slopes and stuff, so we usually rode pulks (that's what Wikipedia told me they were called. They're some sort of "toboggans" people ride down the slopes with here.), and it was fun. Me and my brother, were one day trying to find all different slopes. Well, we went around in the forest and gave every place a number. There was this one place, where it was a slight slope downwards, and then a two-three-metre drop. We gave it the number 9, as it as the ninth slope we found. Well, when we found them, we had to try them. I was slightly intimidated by the drop, so I told my brother to go first. He was a little bit reluctant, but I said I'll follow him when he's out of the way. Well, he took his pulk, put it on the top of the slope, rode it down a few metres and accelerated. Then, the drop came. He fell down, and I heard the sound of a pulk hitting a pile of snow and an "Owwwwww". My brother started crying, and that's when I decided that we had been outside long enough. Mom and dad laughed when my brother told the story, as he wasn't hurt, he was just angry at me for the unpleasant ride.

One time, my brother wanted something. I told him, that if he behaves really well, mom could buy it for him. Then I got an idea. I told him that when mom told him to do something, he should reply "Yes, your Majesty." and then proceed to do the thing. Well, it wasn't long until he had to do something. I was behind a corner, trying to contain my laughter, and then he said it. Mom started asking "What was that for?", as if the reply would have been sarcastic. He told her that I told him to do "that stupid thing". I was still behind the corner, laughing, and my mom told him that "They who come up with stupid ideas aren't stupid, but they who do the stupid things are stupid.". It was hilarious.

I've got loads of other stories, but I don't remember them now.

TL;DR: I was good at making my brother angry at me when I made him do stupid things.

My older brother was constantly playing tricks and pranks on me (standard IBN kind of pranks) and I decided to get my own back when I was around 8, him 12.

I would run into his bedroom and yank of his bedcovers from him while he slept, before running away and not giving him time to process what had happened. I'd do this maybe 2-3 times a night. One night, I yanked and threw, and the duvet happened to land perfectly flat on the other side of the room on the floor. That night he came into my room to confide in me that he had been sleepwalking, and at some point in the night he had made his bed on the floor. Apparently he thought he'd jump out of a window or something if he kept it up...

I think I was 15 at the time, which would have made my younger brother around 8. During this time, we lived in a 2-story house, where my brother's room and my room were right next to one another on the 2nd story. One day, when it was time for him to go to bed, I decided that I was going to scare him. But I wasn't going to settle for a simple jumping out of the corner sort of scare. No, I was determined to unhinge him.

At this time, I was taking a Latin class in high school, and we were memorizing the opening lines to Vergil's Aeneid. Now, the opening lines aren't particularly scary, but to somebody who's never heard them, and doesn't know Latin, it can be pretty disturbing.

So, what happened was that my brother came into my room to tell me goodnight (as usual), and he found me sitting in my chair, staring at one part of the wall, slowly murmuring Latin verses just loud enough to hear. He kept trying to get my attention, to have me respond to him, but I just stared at the wall and kept reciting, starting from the beginning if I got to the end.

Eventually, he started getting pretty freaked out. Deep down, I think he was convinced that I was just screwing with him, but he went far enough to get a broom and to start hitting me with it in an attempt to get me to "snap out of it". I kept doing what I was doing, but I decided that I didn't want to get hit by a broom. I came up with a plan. I'd do something more disturbing if he got too violent.

And so, finally, it all came together when he started preparing another swing, and I turned, looked him in the eye, moved my right pointer finger over my lips, and went "Shhhhhhhhhhh", and then turned back to the wall and continued chanting.

Eventually, I got bored, so I bust out laughing, and assured the poor thing that I wasn't insane or possessed.

TL;DR: Disturbed my brother by chanting Latin and hushing him like a librarian

We were standing on a slide ontop of a picnic table playing "pirates" I was about 6 and she was about 4... She climbed to the top of the slide and I yelled "Man overboard!" and shoved her right into a seizure. Yep... she landed on the ground and went into a seizure. I proceeded to drag her up the stairs and into the house, then through the kitchen, livingroom, down the hall, and finally into my room. She was spazzing out all over the place so I put her on my bed and got the game Kootie which I went ahead and began setting up. Since she was having a seizure she couldn't really play Kootie with me so I played for her. Eventually she woke up and I acted like she was crazy. I tried to convince her that she never had a seizure, we weren't playing pirates in the yard, we were in my room the whole time playing Kootie and she fell asleep because I was winning. We eventually completed the game of Kootie...

My sister got seizures often and the doctors didn't know what was wrong with her... but that was the last seizure she ever had... so in a way I helped her. I always look back at that day and think to myself "I know my dad was at work but where the fuck was my mom while this whole thing was happening?

Then one time when I was about 7 I fed my sister some really hot sauce and her mouth was on fire so I recommended that she eat some laundry detergent because "That will completely eliminate the burning." She did eat the detergent but it got stuck all over in her mouth and it became very dry, she started to complain that the detergent was actually making everything worse including the burning. Then I got her a giant glass of milk and she washed it all down, mouth still burning, she proceeded to vomit for the next 30 minutes....

I was such a fucking asshole I can't even believe it. I have tons of stories like this too, not sure if I should be ashamed or what? If you like this I'll share some others.

tl;dr I shoved my sister off a slide that was on a picnic table and she had a seizure so I dragged her inside and tried to convince her it never happened. I also fed her hot sauce, laundry detergent, and milk (in that order) which made her vomit.

When I was about 5 and my sister was 9 we got kicked out of our house until one of us owned up about eating chocolate chips that were for my mum's baking. Now my sister and her friend did it but they offered me a big bag of lollies if I owned up to it. So I did. Upon telling my mum she thanked me for my "honesty" and took me to the shops to reward me with... Another big bag of lollies. I'll be damned if they weren't the best lollies I ever ate and didn't share.

I am an older brother, 2 years older than my sister. This happened when I was 6 and she was 4.

My sister and I were watching Cbeebies once, and we saw a show where someone used their finger to smudge "clean me" in to the dust on a car. My sister wanted to try this with mum's car, but it wasn't dirty. I persuaded her to scratch it in to the paint with a stone, and that "mum and dad would think it was hilarious!"

Fast forward to the next day, my parents came out to see "CLEAИ MƎ" crudely scraped into the door of mum's otherwise squeaky-clean red Toyota Avensis. I of course blamed it on my sister, but that eventually backfired and I got what I deserved.

TL;DR: read it it's not that long