I've decided that I am in dire need of an ironic t-shirt. I already have horse top which works quite effectively to give the wrong impression about my character, but I'm thinking of a t-shirt with a big crucifix on it. There a quite a few other entertaining options:
Justin Bieber/Hannah Montana
Anything related to being a vegetarian
Massive pair of Crocs
Jay Z/Kanye West
It would mean I had to restrict my company to people that know me, to achieve ultimate hilarity and avoid coming across as a complete fool.