The title basically sums it up- post song lyrics (or i guess maybe movies, speeches, etc too, but I think lyrics are much more common for this) that you misheard, and you ended up with something funny!
I'll start with a couple:
-when I was young, my dad used to listen to Six O'Clock News, by Larry Norman, but I always thought the chorus was saying something about a sexy clock,
-honestly still not sure of the name ofthe song (it may be Purple Haze?) By Jimi Hendrix, he says "excuse me, while I kiss the sky" and I can't NOT hear "while I kiss this guy."