Using a dudes ball sack as a punching bag. The boxer can wear boxing gloves or go bare handed, and punch the man’s balls. Often done using a table with a hole cut out for the balls to dangle through. The boxer can then stand or sit underneath and use the testicles to box with.
Bro I saw the craziest porn last night! A dude dropped his nuts through a hole and someone was punching them from the other side like a punching bag! It was called ball boxing!
by Bust More Balls November 29, 2022
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A competitive sport in which you bend over, cupping one hand over your balls and then attempt to punch your opponent's balls till they submit. Typically there are no real rules and is usually the result of long night of drinking.
Husband - "I'm not sure if we will ever be able to have kids. When I was in college I was a professional ball boxer and now my sperm are punch drunk."

Wife - "What is ball boxing?"

Husband - "It's really not a clever name. We would get drunk, cup our balls and proceed to punch each other till someone gave up. Did I mention we were drunk?"

Wife - "Why in god's name did I ever marry you?"
by GroovySan January 1, 2008
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Taken after the game box ball, that you played when you were in elementary school. The object is to get the balls in the box. In this case being the womens box, also knows as the vagina.
I was playing box ball with your girlfriend last night.
by pay money April 14, 2006
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