Any person that does something incredibly stupid. ie: dumping bong water all over your friends bed.
See Also: Huge Asscat; Mcbone
"Oh! I'm always the asscat!"
"Man, I'm such the asscat."
"Meow, I'm always the asscat..."
"Don't be an asscat!"
"G Rate! I'm the asscat!"
Any person who is: Weird, Odd, Nosey, Random, Obnoxious, Annoying, Loves Drama, Compulsive Liar, Headcase, Constantly Highly Stressed Out, Have fake relationships for years, arrested for lying about your age.
"Don't be a nudd!"