A guy who seems bipolar and bitchy. He acts like a girl with/without PMS. He is someone you would not want as a boyfriend. He is the epitome of retardedness. He talks to his girlfriend about how he thinks other girls are cool and awesome.
Ex. Girl 1: Wow he's such a Mitchell!
Girl 2: why?
Girl 1: one second we were talking about the date and a second later he is being retarded and talking about other girls and how he thought they were better! WTF?!?
Girl 2: wow girl... He's such a bitch! (Bitchell... lol)