stfu, asshat. 

something everyone should say to obnoxious fucking idiots with their head up their ass.

idiot: liiiiiike OMG hilary duff is lyk SOOOOOO punk rawk!
me: stfu, asshat.
idiot: lyk omg you lyk said lyk ass lyk hat!
me:mmmhmmm. get the fuck over it.
idiot: MOMMY!

stfu, asshat. by ur bald headed granny May 4, 2006

asshat 

One who has their head up their ass, thus wearing their ass as a hat. Someone who is very ignorant, stubborn or dull.

"Gah! Dan won't pay me back my cash! Freakin' asshat!"

asshat by Dervish April 14, 2006

asshat time 

1. Time spent being an idiot. 2. Time pre-allocated for someone to be an idiot.

You'd better give him two weeks of asshat time before the project starts or he'll fuck it up when it counts.

asshat time by Industrio Melman March 13, 2003

10 gallon asshat 

1. an asshat of extreme proportions.
2. one who engages in frequent and unwarranted asshattery

that man is a 10 gallon asshat

10 gallon asshat by z-minus August 25, 2005

Asshat 

To have ones hat on ones ass. The ass is not the most common area to place ones hat. Hence the implication that to have ones hat on ones ass is just plain stupid. Often used when drunk to refer to someone who has just broken a pinki promise.

"You sir are an asshat" "Tom come back here, quit being an asshat" "I'm sorry I was an asshat"

Asshat by Kurt (biscuits) Russell December 9, 2014

asshat 

a unit vector in the ass direction
(similar to i hat, a unit vector in the i (or x) direction, j hat, k hat, etc.)

"Andrew is such an asshat."
"Totally. His unit vector is definitely pointed in the ass direction."

asshat by andiland August 11, 2005

Asshat 

A ridiculous person who lies on television and makes a spectacle of himself usually by making outrageous claims of moral superiority and intellect.

Tucker Carlson is an Asshat.

Asshat by ME_Observer December 29, 2010