Military related term referring to sex in a field environment, usually only resorted to in desperation due to the dirty field condition of said pussy.
Joe 1: WTF man, youre like 20 minutes late replacing me for guard?????
Joe 2: Sorry dude, was gettin some tent pussy......
Joe 1: THOUGHT I smelled SPC Joyce.... its all good.
LOL, they caught a couple gettin tent pussy in the dumpster at AIT