Not me but good ones
I have a mate called Clive who is one of the funniest people in the world and one of the evilest. He's always been up to no good, like dropping an open bottle of cherryade from a railway bridge into an open top car but a couple of really witty pranks he has done are worth repeating.

First, we both used to work at the same nuclear power station (really). The kitchen on site was always popular at breakfast time, with a long queue of people waiting for their grub. However, because the buildings on the site were spread out, it was a real pain in the arse to walk all the way over every morning. Clive combined his love of toast with his dislike of the post room for his first prank. One day he knocked up a flier on his PC for 'Toast in the Post', a service where the post room would deliver your breakfast orders with the mail. He then got a list of labels for every department on site, put each on an internal envelope, enclosed a flier and mailed every single department. So, the post room effected it's own winding up. Apparently they were inundated with requests and not at all happy!
The second prank was he knew where a particularly unpopular teacher at our school lived and what his phone number was. For years after he left school, each time he drove past the teacher's house he'd make a note of what car was in the drive way and then put it in the free ads, with the teacher's phone number, at a ridiculouly low price for a quick sale. Genius!
(give it six weeks and it might clear up would like to butter your muffin, Tue 18 Dec 2007, 12:20, Reply)