When a women performs oral sex on a man taking both shaft and nut sack in her mouth simultaneously.
Damn, the wife has really perfected the ball and hammer. I wish she had those skills 10 years ago!
by Merkin Donor III May 28, 2009
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The male version of camel toe. When a man wears really tight jeans, biker shorts, or a Spedo you can see his ball pein hammer.
by Stu Salsbury June 15, 2009
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