When a friend beats his meat and nuts on your blanket
My friend came over and started zaching off on my couch
by Pussyfoot69 August 14, 2017
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When a guy named Zach, jacks off.

Can not be used for someone who is not named Zach.
Zach: I've been Zaching off in your shower while you were gone bro, its ok though, I finished in the drain.
by Mr.5,001 June 5, 2014
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someone who is a total jack off yet still retains the ability to look cool doing it; the act of zaching off
Zach: Good lawd them sum big titties. MMMmmm daddies hungry for sum of that lovin tonite! Daaaammmnnn!!!

Wes: Dude, youre fucking sick.

Zach: Fuck you douchenozzle

Wes: You're such a Zach Off
by wbthatsme34 May 27, 2009
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