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1.
Z_z
Same as saying zzzzzz

defines being "not willing" to do something
Jon: Yo Bob help me move

Bob: zzzzzzz

Jon: omg ur worthless at least help me pack some stuff

Bob: Z_z
by killersingh October 19, 2007
43 11
 
2.
Sleeping,Sleep,Sleepy

The Z's are the eyes of the face of a person sleeping
I am going to go Z_Z (means hes sleepy)
by James Small June 11, 2008
6 7