Top Definition
This is the act of hitting your testicles in somebodys face. Sacklash can also mean when you hit your dick in someones face and it leaves a mark such as a cum mark caused by pre-come from the penis.

The art of performing the perfect sack-lash is to swing your penis or balls quickly in a sideways motion until you hit the other persons face, or any other part of the body. If done while pre-cumming or upon ejaculation, then the perfect sack-lash mark can be achieved
My wife decided to tease me, so i gave her sack-lash and she got a cum mark on her face, in her eye, on her kneck and belly. this was a perfect sack-lash
by OZ ZY OZ April 22, 2008

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