Roberto Flores, 27, of Las Vegas has a history of beating up women and biting off their lips. After serving seven months of a seven-year sentence for biting off 80% of his ex-wife's lip, he met 22-year-old Victoria Silva. She says when she tried to break off their relationship last January, Roberto went batshit crazy. He beat her up, banged her head against a toilet, then bit her face, nose and lips. He has a perfectly good explanation. He claims the abuse he witnessed and suffered as child has gone untreated and he lashes out by biting off women's lips. Yeah, good luck with that defense.