To punch someone in the nuts. This is in contrast to roshambo-ing which refers to kicking someone in the nuts.
If you keep it up, you're going to get a junkpunch!
by Biggiehaines November 16, 2006
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to punch someone in the vagina or penis.

they must deserve it.
I got so mad at that hoe i wanted to give her a junkpunch.

"oww my balls hurt!"
"why?"
"tori just gave me a junkpunch!"
by Tori Tampon December 6, 2008
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The act of punching someone, male, in the balls.
*after junkpunch*

Guy: "Why?!"

Girl: "You know why!"
by Ohbabyy. November 15, 2009
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