Heart Shaped Box from Nirvana's In Utero album. Misheard version "Hey, Wayne, I've got a new cool plane" Actual version "Hey wait, I've got a new complaint"
Mondegreens, apparently (http://en.wikipedia.org/wiki/Mondegreen). Mrs Burgundy Red has never forgiven me for pointing out that Alanis Morissette's "You Oughta Know" appears to feature the line "It's not fair to deny me of the cross-eyed bear that you gave to me".
Not so much misheard lyrics as a misheard song. Many years ago we used to listen to a lot of Runrig. Some of their songs are in English, but some are in Gaelic. The mother-in-law, now sadly passed away, asked to borrow the LP because she liked to listen to it too. The week after we were round her house and she ask my wife to help her with one line because she had worked out the rest. You've guessed it. One of the songs sung in Gaelic.
Stranglers, golden brown. Always thought it was " with my machine gun" as opposed to "with my mind she runs"
I'm going to hit the highway like a battering ram, I'm a Cilla Black fan on a bike. He's just a poor boy from a poor family spare him his life from these warm sausages.
When we were playing Birmingham in the play-offs at Oakwell in 2000, and the whole ground were singing the 'We're going to Wembley' song, I didn't sing the first part as I didn't want to get collered for swearing by my Dad. I heard 'Que Sera Sera' as 'Kiss Your Arse Hurrah'... Which is an improvement on the original anyway if you ask me!!