A slang word commonly used to describe a person ( usually an african american male ). The word relates to a person being "straight up" and "forward". More of a way to express a man thats agressive and somewhat sexy. He gets into a lot of trouble. Usually mistaken as a bad thing and stereotyped. Women commonly use it to describe their partners or describe them playfully.
Girl 1: Damn! He Sexy As Hell!
Girl 2: Girl you don't want him, he's a Thug!
Girl 1: Oh I want a thug!