Wild video shows a giant bodybuilder brawling with two other tourists outside a Thai bar — with one of them smacking into a parked truck while desperately trying to backpeddle away. The huge muscleman, also believed to be a tourist, was filmed swinging wildly at the smaller men Thursday in Pattaya, a city dubbed “Sin City” because of its reputation for sex and crime. The barefoot bodybuilder — showing off his physique in a skimpy T-shirt and shorts — flattened one of them, while the