(noun)-Somebody who is being a complete jerk to everybody, and is uncontrollable. It's almost as if they have an invisible hat that says, "I'm an ass!". Hence, asshat. (Plural: Asshats: A group of uncontrollable asses, usually young, immature boys, who are being complete jerks to everyone.
Phil, quit being an asshat and get your act together! (Plural)-Tom and his buddies are being real asshats today.
By The Hankerchief
Someone who acts so completely ridiculous and irrational that you can't stand to hear their voice much less see their face.
Anyone who know's Clay would agree, he's the biggest asshat we know.
By This makes me smile
people who submit retarded definitions to UD
the person who wrote this is an asshat
By big asshat
one who is useless or unnecessary, as attempting to wear a hat on one's ass is.
"We need that asshat on our team like I need a new asshole on my forehead."
By Knotty1
An Asshat: someone who is a complete idiot OR verbal abuse for someone you are angry with OR a greeting for someone you dint want to see
'Hey You!' 'Hey Asshat!'
By HairMetalGlamRock