An individual that does not think before they do something increadibly stupid or destructive. Someone that doesn't use their head for anything better than a hat rack.
Any sports fan that cannot be seen, at any times, without is favorite team's ball cap on. Predomionantly prevalent in baseball fans. Frequently seen blowing rent money at nearest watering hole or sports bar.
Joey: But you’re still moving in together, right? Because my ad came out today. (Shows him the paper.)
Chandler: (reading the ad) "Wanted. Female roommate, non-smoker, non-ugly." Nice!
Joey: Yeah? I just figured y’know, after living with you it’d be an interestingchange of pace to have a female roommate, y’know? Someone I can learn from, someone-someone who’s different than me. And what’s more different than me; a guy who’s not 19 than say a girl who is 19? Enh? (Points to his head.) Not just a hat rack my friend!