An impenetrable, probably sloopy, vagina in a state of extreme overgrowth. Accompanied by oppressive and possibly deadly humidity level and dankness. Likened to the triple canopy jungles of southeast asia.
Dude 1: Man, what's that gnarly stench?
Dude 2: Oh, I just hacked my way out of a pretty rough vajungle. Take my beer goggles away, bro.
Mike: Yeah, i went out with Jenny last night.
Ted: Aw man, how far'd ya get.
Mike: I got into her pants alright, but she had a vajungle.
Ted: Really?
Mike: Yeah, it was like Bigfoot's head between her legs.