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 don't 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 doesn't want the sperm, then he really shouldn't 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.
Kneeling in front of the glory hole, Chuck moaned with pleasure as he felt the erect penis he'd been sucking ejaculate, filling his mouth with hot, salty sperm.
A hard plastic or metal shield worn over he penis and testicles, to protect them from impact-related injuries while participating in sports. Usually worn with a special cup-holding jock strap.
Traditional cups were somewhat flat in appearance, without much of a bulge to them. These were often considered to be very uncomfortable to wear. The newer "banana style" cups are curved to conform better to male anatomy, and taper as the go under the balls. The bulge is also a bit more pronounced, to make it more roomy.
Though there are some who don't like the banana style cups, most find them much more comfortable than the traditional style. Banana cups would be especially recommended for a guy with a larger penis and balls.
After getting hit in the groin by that foul ball, Eric was gratefull he was wearing his jock cup. Though it still hurt, he knew it would have been ten times worse if his cock and balls weren't protected.
A guy wearing a jockstrap is said to be strapped, or strapping.
Straps were required under our shorts for gym at the high school I went to. The gym teachers would do random strap checks - by having us pull down our shorts or sweatpants just enough to show we were strappin'. Any unstrapped boys would have to sit out class, and get detention.