There was an episode of SpongeBob where a teen girl character said "Finally, a cool place for teens to just, you know, hang out!" in a squeaky voice. I found her voice hard to understand and didn't hear the "hang out" part, so I thought she said "a cool place for teens to dispiano", and that unknown word "dispiano" meant party or something.
A childhood belief about cartoons

others believed things like this
- I used to think the song "Hang on sloopy" was "hang on snoopy"— gina
- I used to think that Spongebob took place on LAND.— Eeveelover8632
- When i was a kid, i thought that nematodes would eat our house like in one episode of SpongeBobAnon
- i didn't beleive this, but a kid my sister knew thought if he screamed in a really high voice, he ran faster.Anon
- I thought Hurricane Dennis (in 2005) and the character Dennis from the Spongebob movie were related somehow.Anon
- I heard the song about Heaven being a place where nothing ever happened and thought, "What a boring place."Anon