The most embarassing thing that can happen to you. The act of someone going through the trials of inserting their testicles inside your anus.
Oh man, you just got balls in your ass.
by BleedingUrine May 31, 2007
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a common idiom among pornstars
open your ass,show us your ass
bree olson:Oh yeah keep fucking me faster
Jhon strong:spread your ass baby
by Bree_olson November 13, 2012
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To give you a tryout or try to figure out what it's all about. A more civilized form of what a dog does when it...uh...sniffs your ass.
Bill: "Ooh...looks like Peter messed up on his TPS reports again. We may need to fire him."
Bob: "Peter's a bright kid, I like his style. Let's send him out to the Boston office and let those guys sniff his ass for a couple of weeks. If they don't like what they see, then we'll can the bastard."

Stan: "Peter, why don't you come out to Boston and let us sniff your ass for a little bit? Not trying to scare you, but Bill would like us to evaluate your performance."
Peter: "Man, you guys are such a bunch of brown-nosers."
by Nicholas D November 7, 2007
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a "mark" on your permanent record

a mistake

in literal terms, something really gross.
"It's no skin off my nose not being your friend!" said Kelsey
"It's just a pimple on your ass then!" Rachel chuckled to herself.

Dude, that pimple on your ass is raunchy.
by Sum&Aut July 18, 2006
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Tagging someone in a picture without their consent
John: "What happened to that picture of me nude at the party last night?"

Steve: "I put it on Facebook. Tagged your ass."
by Chazach October 23, 2010
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