When you have crabs in the area between your balls and asshole. Or if you a girl it is area between your vagina and asshole.But if your a girl a gooch is more referred too as a "choda"
Person #1: "My gooch has been itchy all day, and I had a shower."
Person #2: "Well than you probably have gooch crabs."
Person #2: "Well than you probably have gooch crabs."
by Pavelski8 November 09, 2007