There's this drunk bloke looking for a hooker he can get a fuck off of. He's in luck as he comes across a lady of the night who offers him a bit of business. "How much is it?" "Well if you want a rough shag its 30 quid, if you want a smooth one, its 50" the bloke looks in his wallet and goes "go on I ain't exactly flush tonite, I'll have a rough one" so he pays up they do the business he shoots his loads and starts getting ready to leave "Out of interest luv" the bloke says "If I'd wanted a smooth one, what would the difference have been?" "Well... If you wanted a smooth one, I would have picked the scabs off first!"