This one is really embarrassing because as a kid, I had no idea what one of the words I was singing meant and just always sang it that way. The song is Blinded By The Light
by Manfred Mann's Earth Band. I thought the lyrics were:
...blinded by the lights
Wrapped up like a douche another brother in the night
The actual lyrics are:
...blinded by the light
Cut loose like a deuce another runner in the night
What's so embarrassing is not that I didn't know what douche meant but that I asked my older brother what a douche was. He got a weird look on his face and responded, "Go ask Mom."