by Ls May 7, 2003

by Ben Bashford August 5, 2002

the part that seprates you balls from your arse, or your vagina from your anus.
fun to fondle during sexual activity
fun to fondle during sexual activity
*sing*
the line between your ass and your balls is called your biffon, it is a place that you should really not be sniffin'
the line between your ass and your balls is called your biffon, it is a place that you should really not be sniffin'
by sam + teegan (H) February 1, 2008

The bridge of tissue between the anus and vagina, on which a mans hairy bean bag is likely to 'biff' against during enthusiastic coitus.
by steviestevoid June 28, 2011

To thrust one’s manly testicular orbs against the tender patch of flesh between a woman’s nether regions - repeatedly, with such force and enthusiasm that it might inspire both awe and minor bruising. Can also refer to cheeky prelude play, in which one’s hand “slaps the biff” to tease, torment, or tantalize.
“I dare say, after three minutes of passionate chaos, big John proceeded to slap the biffon with such vigor that Lady Mildred howled like Michael Jackson in a kids home and nearly dislodged the chaise longue.”
by Burnaldsr. September 20, 2025

The region between genitals and arsehole, also known as the perineum. This gets its name as it’s the part of the body that the balls ‘biff-on’ during sex.
by Μῑνώταυρος January 3, 2023
