a person who is very annoying and is an ass. also they could be very full of themselves and can't accept the fact that they are wrong at times.
you: Marilyn Manson is my idol. I mean he is awesome. His words are so inspiring.
assfuck: merilyn is just a stupid retard that doesn't know what he is doing. did you see how he dresses? walking around with underwear.
you: its self expression. thats why i admire him. he doesn't care what other people say.
assfuck: merilyn manson sucks!
you: when are you going to realize that you can't spell Marilyn?
*assfuck signs off*
assfuck: merilyn is just a stupid retard that doesn't know what he is doing. did you see how he dresses? walking around with underwear.
you: its self expression. thats why i admire him. he doesn't care what other people say.
assfuck: merilyn manson sucks!
you: when are you going to realize that you can't spell Marilyn?
*assfuck signs off*
by ...are_you_a_retard?... August 23, 2009

1. A taboo term to describe a 'straight' male who enjoys getting fucked up the ass with toys or other.
2. Often used as an insult in place of motherfucker
2. Often used as an insult in place of motherfucker
"Only an Assfuck would buy a butt plug, sick bastards"
or
"Stupid Assfuck too the last parking place!"
or
"Stupid Assfuck too the last parking place!"
by Satan Claus January 13, 2006

by KyERnurse August 31, 2009

A term used to describe a position of sexual intercourse.
An assfuck is achieved when a male inserts his penis into someone's ass, or anus. This usually causes bleeding in the person receiving the assfuck, but immense pleasure and some penis shrinkage in the person giving the assfuck.
An assfuck is achieved when a male inserts his penis into someone's ass, or anus. This usually causes bleeding in the person receiving the assfuck, but immense pleasure and some penis shrinkage in the person giving the assfuck.
by B.O.S.Kuro-chan May 7, 2007

by commi17 November 1, 2010

by I FUCK UR MOTHER AND UR BROTHR December 10, 2018

by Dubie March 25, 2005
