The prime piece of real estate located conveniently between Scrotumburg and Anusville.

the spot between your balls and asshole

The Harris Millis dining Hall at UVM.

1. Perineum, ie area of skin directly anterior to the anus. Generally refers to the male version.
2. (Obscure) Unkempt, often awkward character who just doesn't seem to fit with the rest of the group. Unrelated to 1; originated in Cape Breton, Canada, but has spread as far as Australia.

The space between your sack-o-nuts and your whale hole.

(n.) the grundle is the area between your balls and your asshole. it can sometimes be referred to as the gooch, gouch, or gleek

The grundle is not simply just the area between the testes, and the anus, rather it's the wormlike skin line.