o-rings

the little round rubber black stoppers for ear plugs and spikes.

damn it, I lost my O-ring and now my plug won't stay in!

by ashley February 01, 2004

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 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

o-ring

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.

by Khashishi April 21, 2010

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

THE O-RING

starring Preston Parker, John Smalls, and watch them rip and shred these assholes to pieces

Preston Parker, John Smalls have 5000 horsepower of Anal Destruction in the O-Ring

by stew piddasso October 06, 2006

O-ring

Anal muscles.

1. My O-ring is a virgin.
2. If you don't slow down, you'll blow my O-ring!

by The nazi of Yatzee November 08, 2002