In the Avril Lavigne song "I Can Do Better" she sings:
"I will drink as much lemoncello as I can..."
But for a while I did not know that lemoncello is a kind of liquor, did not even know that it is a word.
So I heard it as:
"I will drink as much lemon jello as I can..."
I spent hours wondering how a person could drink jello.
A childhood belief about misheard lyrics

others believed things like this
- I used to think that if you mixed a diet drink with a regular drink, it would explode. Anon
- I used to believe that Jello Shots were something that came out of a gun somehow. — J-E-L-L-O
- That you had to be a male to drink beer.— andrei gaspar
- I used to believe that you needed a prescription to drink Dr. Pepper.Anon
- I used to think it was illegal to drink hot chocolate in the summer. — Samantha
- I used to think it was illegal for children to drink coffee— C.W.