biffkin 

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

biffkin by Adam Stevens November 4, 2004

biffkin 

male anatomy - the area of the sin between the scrotum and the rectum

biffkin by Anonymous July 11, 2003

biffkin 

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"

biffkin by sholto bonham thomas February 27, 2004

biffkin 

The hair that grows off the gooch not the gooch itself!

My biffkin is getting too long. I may need to shave it.

biffkin by Bizazy May 16, 2006

Biffing Plate 

The small area of skin between a woman's cunt and asshole where a guy's balls slap against when he is fucking her

Boy, Mary's biffing plate got a good hammering last night

Biffing Plate by sanddevil March 14, 2009

Quiggle Biffing 

The fucking of a fat chick

Dude, I was just out Quiggle Biffing

Biff any good Quiggles lately

Quiggle Biffing by QuiggleBiffer November 18, 2010

stiffington bo biffington 

A cocktail, usually mixed in two 16-oz solo cups, which is made strong for the sole purpose of drinking oneself retarded. Also referred to as a "stiffington" or "stiffy" for short.

I can't wait until thursday so I can pick up some captain's and just rip stiffington bo biffingtons all night.

stiffington bo biffington by stiffington b. biffington January 21, 2009