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 10, 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 August 25, 2008

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

onion rings

Steph S. and Vicki F. love O-rings.

by aunt jemima February 17, 2004

o ring

The black rubber rings that hold in body jewelry.

I lost one of my o rings, so my earring fell right out!

by SR August 1, 2003

o rings

The seal around a person anus.

She road the bone rollercoaster so much her o rings are blown. Causing skid marks in her panties.

by kagent November 23, 2005