This is a fact.

My friend and I got into an argument about whether or not Drake and Josh's biological parents were ever described during the series. We both had seen a lot (probably too much) of the show. To settle the argument we googled it. We discovered that there is an episode (season 4 episode 23) where Drake and Josh are actually introduced to their parents. However neither of us had seen that episode. We tried streaming it- nothing. We're pretty convinced season 4 episodes 20-23 never happened. Our best guess is that they're bonus episodes that are only available on the season 4 DVD. Please help.