OK so I've been tricked into going a fancy dress thing at work. My friend asked me cover his shift for him and I agreed. Then I find out two days before I'm supposed to work (it's this Friday) that it's fancy dress. There are actually two fancy dress shops in my town, but they're mega mega expensive to hire from, so what can I go as? Bear in mind that it has to be amazing, pretty cheap, and subtly offensive. Any ideas?