2. (verb) A method of social separation used as an alternative to deletion, enabling contact recognition without the embarrassment of answering accidentally or unknowingly.
2. The dude who drives 90 on the local street and cares about his hair more than any other person.
3. When used in pairs or more, symbolizes sleep.
2. You see that? It was Z going 90 down the street.
3. Gonna go home and get me some zZz's.