sentry gun 

In TFC, a machinegun on a tripod that shoots on its own. Built by an engineer and avoided/destroyed by a disguised spy

"Somebody take out the sentry gun in the flag room!"
"We need a sentry gun in the flag room!"

sentry gun by Anonymous June 2, 2003

sentry gun 

Any stationary weapon capable of indentifying and assaulting individual targets without the aide of human operators.

"The sentry gun could track up to five targets simultaneously."

sentry gun by Plagued July 30, 2003

The Sentry Gun 

An ancient bathroom ambush tactic. The operative will wait in the middle stall for 2-3 people to start using a urinal at once, it is imperative to this tactic that the urinals have no surfaces or walls separating each other. Once they start urinating the operative will burst out of the middle stall and grab the middle urinal user in a chokehold while also shoving their knee into their ass. The knee in the ass will enable the operative to maneuver the still pissing victim into the same direction of the other urinal users like a sentry gun, if successful the victim should piss all over the other users. (Optional) If the victim is uncircumcised hold the foreskin shut, once it fills with enough piss let go, this will release a charged shotgun blast of piss, this increases the spray factor enabling heightened efficiency in combat situations . Once the victims piss stream is weakening then it is imperative that the operative must retreat before the other urinal users start pissing on them, if necessary use the victim as a piss shield. To create a distraction pull down the victims pants and shove them into the closest user. The user closest will begin to freak out as a piss covered dick is rubbing up against their own piss covered dick. The furthest away user will be blinded by not only the display of violent dick rubbing but also the victims bare ass. Operative is urged to flee at a designated rendezvous point to await further orders.

"Dude, the urinals open, why aren't you pissing with me?"
"I don't know man, middle stall is occupied, I think someone is trying to use The Sentry Gun on us..."

The Sentry Gun by War-vet Don Cheadle February 26, 2021