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 JpR December 10, 2008

by kick201 March 4, 2009

Russ: Dude, why are your eyes so red?
Scott: Last night, I was eating Donna's starfish salad and finger banging her honey pot and when she came, she squirted pussy mace in my eyes. I think she gave me pink eye!
Scott: Last night, I was eating Donna's starfish salad and finger banging her honey pot and when she came, she squirted pussy mace in my eyes. I think she gave me pink eye!
by JoMar March 24, 2013
