Weirdest request we ever had (local football club do, back in the UK) was when our drummer was approached, mid-song, from the side and asked if we could do "We are the champions" our drummer issued our usual response in order to get rid of the pest.
"Ahh, sorry mate, can't, I know it, but the others don't"
"Oh right. Well, okay, can you do it on your own then"
?????