A colorful expression which literally means "balls on chin". Derived from the action of the testicles slapping the chin of a person performing "rough" fellatio on a male or livestock.
Sara was bonched by Franco while giving him a blowjob. blowjob
by Bill Rizer Pijudo December 11, 2015
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Area between your pink and your stink
you bite bloody bonch!!! (when you eat a really hot wet,or, period pussy has dripped down to the area)
by AHBAHBAUM May 28, 2003
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The area between a dudes scrotum and rectum, usually rather furry.
Lever 2000 does a great job cleaning part number 653, my bonch.
by Matthew L January 07, 2004
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Human Perineum, male or female. It's close to your heini and on girls it's tiny; ass side of ball-town, ball side of ass-berg.
My bonch itches.

I will bonch-shive you with a fork.
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“Omg you are such a freaking bonch.”
“Thanks for being clean with your language!”
by You know the one November 24, 2018
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island of flesh between your balls and asshole.
"boy was my bonch hair bugging while walking"
by Albert April 23, 2003
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The act of inserting objects of various size and shape into one's anus.
Hey Danny, wanna bonch this soda can?
by david April 17, 2005
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