Top Definition
A very difficult sex stunt usually performed by a male named Zach. To perform this incredible feat, a female must lay on her back with her legs in the air. The male then spreads the legs of the woman. Then, standing straight up, the male aims his penis downward and hammers the female as a Jackhammer would concrete.

To perform this properly, the male must have a quite large sized hammer.
You have just been Zachammered!

Are you ready for the Zachammer?

Do you want to touch the Zachammer?

Zach is a Zachammer!

I am the Zachammer!
by Zane Trane (a.k.a. Zachammer) April 28, 2008

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