Haha I've actually specifically dressed up for auctions. Or in this case, actually dressed down. I had boardshorts, a headband and a ripped T-shirt. Who knows if it actually did anything, but I had fun anyway.
I think a bidder's bid speaks a million times louder than what they're wearing (or not wearing, in thatbum's case) (and I have nothing on that Winnie The OMG)
Ha I was prepared to go quite high in that particular auction - and so I had this idea at the time that people would be less willing to follow me if it looked like I didn't know what I was doing. So I sat on the ground and bid really informally - saying things like "aw yeah, why not?" when prompted by the auctioneer etc. In the end I was the highest bidder by a fair margin below the reserve, and secured the property, but I think it had more to do with the dead market in Perth at the time rather than any antics.
There's a Mexican joint in perth having a tequila dinner in a few weeks featuring Avion tequila. They're encouraging people to dress up as turtle from entourage. Awesome