Parker

A guy who will act super nice at first. Is into sports and has lots of friends who are douchebags but seems different until you really get to know him. Once you do, you better run because he gets super possessive, argumentative and never lets you have an opinion. He may have a large dick but don't let it fool you as his personality is actually total shit and due to his cockiness he doesn't understand how to take no for an answer.

Person 1: "Wow I fucked Parker last night. Best sex EVER."
Person 2: Girl you didn't tell me he was a PARKER. You better stop dating him they're jerks.