Top definition
It is the bit of skin between your scrotum and your anus. It can also be used to insult people.
You lick biffkin
or
You are a biffkinator
by Adam Stevens November 04, 2004
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2
male anatomy - the area of the sin between the scrotum and the rectum
by Anonymous July 11, 2003
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3
the space between ones legs, betwen the anus hole and the bollock sack on a man
the main area where arse hair grows.
"youve got a hairy biffkin"
by sholto bonham thomas February 27, 2004
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