The area between your balls and your arse, not quite balls but not quite arse, the barse.
Not to be conflated with
the same area on a woman, between the
fanny and the arse, that's a
farse
I had an itchy barse the other day and wanted to give it a right
good claw, but I had a raggy
nail and it scratched the sensitive
skin there, now its itchy and nippy at the same time.