CB lingo for getting some sleep; frequently used by people that did drugs in the 70's and/or watch Smokey and the Bandit whenever it's on cable
John: "Hey man, what are you doing?"
Rick: "I'm getting ready to start stacking z's before I have to go out on a long haul tomorrow."
or
John: "I think it's time to hit the hay and stack some z's."
Ginger: "OK, I guess we won't have sex then."
Rick: "I'm getting ready to start stacking z's before I have to go out on a long haul tomorrow."
or
John: "I think it's time to hit the hay and stack some z's."
Ginger: "OK, I guess we won't have sex then."
by gor8drz April 8, 2010