I used to think that Frankie Avalon sang, "Hey Penis, Oh, penis..." instead of "Hey Venus."
A childhood belief about misheard lyrics

others believed things like this
- I used to think that Bananarama's song "I'm You Venus" was "I'm Your Penis"Anon
- I thought venus fly traps are from the planet Venus— Ted Snow
- I used to think that men's poo came out of their penis' like wee.— Helen
- I used to think that I was the only person to have a penis!Anon
- I used to believe that girls pee was in their poop, because they have no penis.— s
- i thought getting circumcised was to get the head of the penis cut off— Dee