open junk 

when a group of guys (fully clothed) sit around with there legs spread open and everyone throws a ball that is passed around at another persons genitals to cause pain

my friends and i got bored so we played a game of open junk, fortunatly i didn't het hit in the junk.

open junk by Troy Selover January 18, 2004

open chest 

A game played by manly (I use this term very loosely) teenage boys, where, if someone doesn't walk around all day with their arms protecting their chest, they will be slapped or punched in the chest.

If you play this game, you have likely never grown ball hair.

These retarded ass kids were playing open chest at lunch today. It made me feel ashamed to be a minor. Shit, a human.

open chest by voorheez January 17, 2008

Open Beta 

The last stage of game development where the game is open to every player for a final test to the game and to resolve any issues that people may find.

My example: World of Warcraft

Open Beta by Blizzard is GAY November 8, 2004

Open Down 

the reverse of "Shut Up" but used the same way

Open down you ass hole.

Open Down by Todd disamor January 16, 2003

open run 

a pickup basketball game open to outsiders

Are there any open runs in Hollywood tonight? Me and my homies wanna play some hoops.

open run by RiddimJack April 6, 2011

Open Sleeman

Having anal sex until the person's asshole is gaping and then peeing in the gaping asshole.

We were having the best anal until I couldn't hold in my pee any more and accidentally gave her an open sleeman.

Open Sleeman by jinjabread_man May 8, 2011

Open Bolt

A semi or fully automatic firearm is said to fire from an open bolt if, when ready to fire, the bolt and working parts are held to the rear. When the trigger is pulled the bolt goes forward, feeding a round from the magazine into the chamber and firing it. Accuracy can suffer somewhat in an open-bolt design, but this is generally less of a concern in automatic weapons.
These guns include: BAR, Bren Gun, Carl Gustav M/45, CETME Ameli, FN MAG , FN Minimi, Hotchkiss machine gun, Lewis gun, M3, M60, MAC-10, MG34, MG42, Mk 19 grenade launcher, MP40, PK machine gun, PPSh-41, Sten, Sterling, Suomi M-31 SMG, TEC-9, Uzi

An "Uzi" is an open bolt machine gun.

Open Bolt by GaT420 December 20, 2008