1 definition by smeagle2012

Top Definition
an act of oral sex from "giver" while the "receiver" is asleep; catching some Z's is derived from: kip, nap, sleep, and slumber.

z-j get it?

waking up to a girl practicing fellatio AKA "Z-J" on your penis.....
by smeagle2012 March 11, 2009
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