One that is a complete mistake to existence, and absolutely terrible at everything they do.
For those who play Call of Duty/other related video games:

"That guy I just knifed is an assclown."
"Get knifed, assclown."

For regular use:
"Wow, look at that guy. What an assclown."
Kain91によって 2010年04月26日(月)
Noun:

1. A troll who frequents the same chat room/game room with the express intent to annoy the regulars with ilk, foul language and total disgust and rudeness. Usually said assclown will end up getting the perma-mute by everyone.

2. In general, on the society totem pole, someone who is lower than an asshole or jack ass.
Room reg: Look! Our resident assclown just came in! Everyone initialize your perma-mute button, as he's going to do nothing more than troll and flood the chat with his foul mouth and stupidity.

Oh christ, the assclown is back. Mute now to avoid feeding the troll.
The Saucy Oneによって 2009年11月23日(月)
clown of anal origin...
"Happy Birthday AssClown..."
pissdursedickmomによって 2009年08月28日(金)
A mear generic insult, the true meaning of this word is one that insults the person's purpose in society.
I suggest you get moving, Assclown!
silenceisgoldieによって 2008年07月22日(火)
The sorry piece of herpes infested trash that is dating my sister. The said trash has the given name of Johnathan.
If your Ass Clown boyfriend comes in my home again, he will go head first off my balcony.
BigT1985によって 2013年06月21日(金)
Any person who thinks the show Jackass should be taken seriously.
Did you hear about that assclown who barbecued himself on a grill while trying to create his own Jackass stunt?
redelman43199によって 2011年05月12日(木)
Heres the REAL definition of assclown...
Someone that says a joke only he thinks is funny and no one laughs.
Neutron: How much for a beer?
Bartender: For you NO CHARGE HA HA HA!!!!!!!!!!!!
Neutron: ..................................... Dude ur an ASSCLOWN
nirvvbonerによって 2010年10月29日(金)
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