Top Definition
Muscle of the anal opening. Can be easily ruptured through violent anal sex.
Sorry if my 12-incher tore your o ring.
ayon kay MegaMan_C_ ika-09 ng Pebrero, 2004
23 more definitions
The seal around a person anus.
She road the bone rollercoaster so much her o rings are blown. Causing skid marks in her panties.
ayon kay kagent ika-23 ng Nobyembre, 2005
Anal muscles.
1. My O-ring is a virgin.
2. If you don't slow down, you'll blow my O-ring!
ayon kay The nazi of Yatzee ika-07 ng Nobyembre, 2002
a round seal, often made of neoprene or some other compressible "rubber-like" compound, that is an industrial part.Looks like the part of a condom that unrolls before you actually unroll it. Can be used as a cock ringif you get the right size
"My buddy's a mechanic, I went thru his box of assorted O rings and found the size I can use as a cock ring. Nancii's gonna beg for mercy tonite !"
ayon kay Jake ika-06 ng Marso, 2004
your brown eye, bunghole, or the muscle that holds your turtle head in.
dude i just took a massive dookie, i almost blew my o ring
ayon kay longhairedwizardwithlazyeye ika-25 ng Agosto, 2008
use your phone to record a girl orgasming while you're having sex with her, then set that recording as her personal ringtone when she calls you.
<your phone rings>
friend - "WTF? that sounds like theresa, but what's happening to her?"
you - "oh, that's theresa's o ring"
ayon kay JON MASSIE ika-05 ng Disyembre, 2009
1. (slang) sphincter
2. (normal) a rubbery gasket used to seal a connection between two pipes. The o-ring is squished between two flanges, forming an air-tight seal.
Don't push too hard or you'll bust your o-ring.
ayon kay Khashishi ika-20 ng Abril, 2010

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