I have to say, I don't really see the humour in these sort of replies. It's not very polite or constructive, it's the sort of thing which could turn people away from programming, and makes geeks/programmers look bad. It's pretty antisocial. Why not spend the time actually helping the guy? Instead of showing off or taking the piss...
So I'm flagging this. I don't think encouraging this sort of behaviour does anyone any good.