when a girls pubic hair gets so out of control it extends from her crotch down her upper thighs. Typically happens to girls who lack sexual activity, which can lead to a terrifying experience for both her and the poor guy/girl hooking up with her.
Derived from "chops", which men typically grown on their faces. Also known as extended side burns.
I went to hook up with this girl last night, but couldn't do it! She had SERIOUS poon chops!
Oh my God! I got way to drunk last night and hooked up with this guy, TOTALLY forgetting about my out of control poon chops!