the area between the genitalia and the anus.

the small area between a males ball sack and his anus

the hairy space in between yer sack and yer poo hole

The part of skin between a persons genitals and their anus.

the area between my big balls and my bum hole

the space between the end of a woman's vagina (or cooch) and her anus

When someone is beyond being a douche bag and has stepped into the realm of being a gouche. Aka. a great big douche!