The space of epidermis constituting the area betwixt the anal opening and the scrotum of a male, although a female also has a significantly smaller area of equal definition(substituting vaginal crevice instead of scrotum, of course). See also The New Jersey.

The Harris-Millis cafeteria at the University of Vermont.

that little flap of skin between your cock and your ass that has too much hair and itches like fuck

A grundel in Boston is that Area on a guy between his Balls and his crack.

When it gets to hot and you've been walking a lot it may start to chafe, and then you have grundlitis.

The section of skin between the beginning of one's asscrack and the ending of their sexual organs.

the no region between your ass and your balls

synonmys:gooch chode

skin between ass and balls