Zaceing 

The act of perpetually one upping another individual.

Hey Zack, I just won $20 on a scratch off!

Well I won $100 on a scratch off.

Stop Zaceing me Zack!

Zaceing by Mossberg.308 November 4, 2017

Zaching 

Verb; Flexing both your biceps showing you are strong enough to overcome illness or cancer; showing that your not weak

Showing wisdom, the men started zaching in hope the man would recover.

Zaching by The Swag King March 21, 2012

Zacking out

To become the most awsome person in your family by growing long hair.

Josh is Zacking out and now chicks are all over him!

Zacking out by joshua124 July 25, 2010

Zaching 

Holding up your muscles in a strong-man pose; showing your support for Zach Lederer and his fight against brain cancer.

Synonymous with "Keeleying"

"Lederer said that with each post in which someone is 'Zaching,' he or she is also supporting 'every cancer patient you come into contact with.'”

"Tebow-ing? Nah. We're Zach-ing."

"University of Maryland Alum and Baltimore Ravens WR Torrey Smith is Zaching!!!"

"DANE COOK ZACHING EVERYONE!"

"This is not a random picture of the Naked Cowboy flexing found online! He is actually Zaching for Zach!!!"

Zaching by Carlysim March 22, 2012

Zaching off 

When a friend beats his meat and nuts on your blanket

My friend came over and started zaching off on my couch

Zaching off by Pussyfoot69 August 17, 2017

Zaccing 

Baiting a person in order to evoke an extreme reaction from them.

Person 1: I really R2D2 from Star Trek!
Person 2: Are you zaccing me?

Zaccing by T-Furnace November 30, 2018

Zacking Off 

1. Using a male pop star to wank off to.

2. Wanking it to Zac Effron.

Austin watched 17 Again and starting Zacking Off.

Zacking Off by TheIronLeaf August 21, 2009