To pull out of a commitment at the latest possible opportunity, often to the severe detriment of other parties involved.
Person 1: "Dude, can I have a kidney?"
Person 2: "Sure"
On operating table:
Person 2:"Lol jk, no kidney for you"
Person 1: "You're Doing a Mace! Noooo"*Dies*
Person 2: "Sure"
On operating table:
Person 2:"Lol jk, no kidney for you"
Person 1: "You're Doing a Mace! Noooo"*Dies*
by Deffer91 May 28, 2010

by godfrey of the face chain guy October 7, 2011

The act of talking about your Mac computer so joyously it seems like you get the same amount of joy from jacking off.
Meghan - Did you hear, James got a Mac Book and an I-touch?
Tom - Yes, I heard. James was Macing off in my ear for the better part of an hour about how awesome his new Mac is.
Tom - Yes, I heard. James was Macing off in my ear for the better part of an hour about how awesome his new Mac is.
by DeeVee585 September 2, 2010

Clayton tried to come at me after a few beers, so I had to use my dick mace to get his faggot ass away.
by SlipItInYoMommaSteve December 24, 2016

by kick201 March 4, 2009

by JpR December 10, 2008

See bear
After making love to your bear, you quickly spray them in the face, targeting the eyes, with your semen, giving you time to escape.
After making love to your bear, you quickly spray them in the face, targeting the eyes, with your semen, giving you time to escape.
by Karekanolover October 12, 2018
