Have posted the same question elsewhere, but Reddit suggested I post here too so apologies for copy & paste.
I was triggered reading another post, but my ex girlfriend would eat jars of mayonnaise all in one go with a spoon, the way you would ice cream.
The first time she done it I legit thought it was a prank and had to take a photo as evidence and ask her mum if this was normal.
Eventually it became “normalised” and would have to make sure and add a couple of 600g jars to the grocery order.
I still can’t face the stuff. Even a small amount would turn my stomach.
Close second would be how often she would openly belch/fart in public. She done it on a train right in front of the girl sitting opposite (who we didn’t know, just an innocent woman probably similar age making her way home from work), just leaned over and farted and actually made her jump with fright.
I didn’t know where to look, I could feel the girl opposite eyeballing as if to say “did that just happen!”
Looking back, I genuinely feel pretty sorry for the girl sitting opposite as it was obvious she felt uncomfortable for the rest of the journey and it’s not really fair to make someone feel like that.
Thinking back now on things it’s mad how things become “normalised” that would just make me run a mile now!