o ring

Muscle of the anal opening. Can be easily ruptured through violent anal sex.

Sorry if my 12-incher tore your o ring.

by MegaMan_C_ February 9, 2004

o ring

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

by longhairedwizardwithlazyeye October 16, 2008

O Ring

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 !"

by Jake March 6, 2004

o- ring

Another term for cock ring. A ring of either rubber or leather that is placed around the scrotum and penis to constrict the flow of blood to the male organ, allowing for larger, longer-lasting erections and more intense orgasms. Also worn to make the male pubic region stand out better, making the bulge in one's pants more pronounced so that other men think you have a bigger package.

I used a rubber o-ring that was too tight and my boner wouldn't go down. Now I can't get the fucking thing off.

by dicklicker May 23, 2003

o ring

On gothic jewelry, such as bondage cuffs and collars, the O-ring is the round ring (as opposed to the D-shaped D-ring). It signifies sexual submissiveness.

If a guy sees me in my red collar with the O-ring, he will know without speaking to me what I like ;-)

by Ms. M September 6, 2003

o ring

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"

by JON MASSIE December 5, 2009

o- ring

Rectum

Hey buddy don't push out that turd to hard,you'll blow out your o-ring.

by Ooogalie Boogalie May 22, 2003