When my brother and I were younger (I was ten, he was seven), we heard the song "I'm Your Venus" on the radio, and we thought it was "I'm Your Penis." Seriously......we'd even go around the house singing it, much to my parents dismay/amusement. We didn't get why someone would write a song about a planet, and since the song was about love, well.....I guess you could say we put two and two together and came up with five, lol.
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
- When I first heard Bruce Springsteen's song, "Born in the USA," I thought that the song was "Porn in the USA"Anon
- When I first heard the song "Constant Craving" by KD Lang, I thought she was singing "God save gravy."Anon
- I thought venus fly traps are from the planet Venus— Ted Snow
- When I first heard Matt Monro's song "Born Free," I thought he was singing "Porn Free."Anon
- I swear I heard a Disney Channel/Radio Disney song where the chorus was a repeated “Damn it”— SpengBab