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2 definitions by Chauncey Gardiner

 
1.
Largely nonsensical reference to both the colloquialism "piece of cake" and the popular parting address "peace" employed as a jocular transmutation of the latter and serving its same purpose.
"Yeah, well I guess I'll see ya in two weeks."
"Yeah, definitely."
"Well, alright. Take it easy, man."
"You too. Peace of cake."
by Chauncey Gardiner March 19, 2006
 
2.
A shortening of the expression "peace of cake" which is as much a matter of convenience as a product of an esoterism fetish.
"Later, man."
"Cake."
by Chauncey Gardiner March 19, 2006