In the Europe song "The Final Countdown" I thought it goes "it´s the fire of downtown". And a little further there´s a line "Were heading for venus and still we stand tall" and I heard "We´re heading for Beavis" (from Beavis & Butthead)
A childhood belief about misheard lyrics

others believed things like this
- I thought that the show Beavis and Butthead was called Penis and Butthead.— Porky's Butthole
- I thought venus fly traps are from the planet Venus— Ted Snow
- I used to think that Bananarama's song "I'm You Venus" was "I'm Your Penis"Anon
- The first time i heard of someone getting fired from a job, i thought that they were actually set on fire.Anon
- When I first heard Bruce Springsteen's song, "Born in the USA," I thought that the song was "Porn in the USA"Anon
- I used to believe that Venetian blinds came from Venus.— Valerie