I used to think that “kickboxer” was a made up word on SpongeBob used to make Patrick sound stupid, no different from Wumbo.
A childhood belief about cartoons

others believed things like this
- I used to think that Spongebob took place on LAND.— Eeveelover8632
- i used to believe i was spongebob squarepants in a previous life.— former sponge
- When i was a kid, i thought that nematodes would eat our house like in one episode of SpongeBobAnon
- I thought Spongebob Squarepants was a piece of Swiss cheese.— Melanie
- I had tinnitus as a child and used to believe that it was the sound that the devil made when he was closeby— Helen
- I used to think that the sound made from airplanes flying over me was the antenna scrapping across the sky.— Richard J Brown