Top Definition
Similar to the idiom, "Wear Your Heart On Your Sleeve" but instead of expressing your emotions freely, you (or someone else) show how much of an asshole you are.
Cal: Yeah, so I punched him in the face for taking the last slice of pizza.
Rudi: It was his birthday, assjacket.
by Master Clean January 17, 2006
For the love of all things sacred, it certainly isn't what that other guy wrote. Holy shit.
My name is not a form of gay sex.
by AssJacket January 26, 2005
When you tie a hoody around your waist
Gawd look at that assjacket. This assjacket sure keeps my ass padded and warm.
by bgock July 10, 2008
1) a person who is all ass inside. Only skin covers this fact.

2) dork or nerd who ties his sweater around his waist
1) You forgot to zip up your assjacket, boss.

2) That assjacket couldn't get laid at a Star Trek convention.
by Loogy May 11, 2011
1.a person's whose ass you want to kick and/or a trick ass-ho. 2. someone who is dumbfounded in a very obvious situation that you find annoying
1. "here he comes! watch me trip this 'ass-jacket'!"
2. ashley: "1+1=2?"
david: "duh you 'ass-jacket'!"
by mcfreshbeats November 14, 2005
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