I may be a bit behind the curve on this but I've just discovered internet prankster David Thorne. His site is hilarious and apparently came to international attention last year with this exhange of e mails where he attempts to pay a chiropractor's bill with a drawing of a spider http://www.27bslash6.com/overdue.html. But this more recent posting really had me in stitches http://www.27bslash6.com/p2p.html