Glory hole

[Becky]

A hole located in a partition in which ones penis is inserted, thus separating the participants and ensuring anonymity throughout the act of copulation or fellatio (or possibly a titty wank).

In higher class establishments, this hole will be fabricated with duck tape to prevent genital chaffing.

[Rihanna]

A hole the has been clandestinely drilled into a stall partition in a public rest room. Used to either spy on ones neighbor in the adjacent stall, or to facilitate sexual contact through the insertion of a penis through the hole.

[Sonia]

A hole in a wall in either a public restroom or peephole, used to give oral sex to the inhabitants of said areas.
99% of the time the person on the other side of the glory hole is a man, so be wary.

[Mark Zuckerberg]

A penis hole that is made between bathroom stalls or viewing booths in adult book stores. These let people engage in anonymous oral sex with others.
Thers are rules to follow for using these holes. If you are looking to have someone suck your penis, then you should stand in front of the hole and wave your erect penis around in front of it. If the other guy wants to suck it, he will stick his finger into the hole and tap the bottom of the hole a few times. That is your signal to stick your penis in the hole.
For guys looking to suck penis, they should be on their knees tapping their finger in the hole. You could also open your mouth and stick out your tongue in front of the hole as an obvious signal to the guys who dont know about the tapping.
Most guys who like sucking penises at glory holes also like the cum. So feel free to ejaculate in his mouth. If he doesnt want the sperm, then he really shouldnt be sucking penis at a glory hole. Or he should be looking for the signs that the penis he is sucking is about to ejaculate, so he can pull off it in time.

[Couch Potatoe]

The hole that is frequently seen in the wall at [peep show]s or rest areas frequented by homosexual men. It is used for giving/receiving [fellatio] while remaining anonymous to your partner.

[Britney]

when a person goes to a porno shop and goes into a booth. There is a hole in the wall connecting to another booth, jus big enough to fit an errect penis through. They can do watever they want with the persons penis (i.e. lick, suck, fuck, etc.)

[Little_Girl]

a hole between cubicals in a public restroom or a kinky underground sex dungeon.

[Dave Paprocki]

a secret [portal] created as a passage way for one to safely insert ones penis (in a restroom)

a definition given on the [FX] show [Its Always Sunny In Philadelphia]

[PussyCat]

In some porn shops professionally [drilled] penis holes with painted lips, heads, butts for the purpose of [anonymous sex] in the form of fellatio or [buggery].

Beware, the guy on the other side might be straight and have a lit cigarette!