One who thinks they can get away with something
"Bitch thought she was slick I caught her fat ass eating them cookies"
Person A: Did you sleep with PAM?!
Person B: No I wouldn't do that to you!
Person B: And why the hell would I sleep with someone named PAM?!
Person A: Liar, I was in the closet recording yo ass...you ain't slick...
Person B: Then why did you even ask?