Via TMZ: Former middleweight boxing champ Kelly Pavlik was arrested today after allegedly stiffing a cab driver in Ohio -- and the police report is HILARIOUS. The cabbie called cops immediately after Kelly allegedly bailed on his fare early Wednesday morning in Canfield, and when police arrived at the scene ... the cabbie told officers he had been "ripped off by that drunk f*** Kelly Pavlik." According to the cabbie, he had picked Kelly up at a nearby bar and driven him home -- resulting in a $25 fare -- but Kelly didn't feel like paying, telling him, "F*** you guys. I'm not paying you. Go f*** yourselves." Pavlik then disappeared into his house.