The (in)ability to influence people into action using a simple "sup?" text. While this typically refers to attempted bootycalls, it can also apply to the effectiveness in rallying lazy friends to do something with you.
Chris: Wait, you went over to her place at 3 AM last night?!
Me: Ya, man...I was already sleeping, too, but you know...
A greeting used to bid tiding to an attractive girl. Can also be used as a greeting to a man, either stranger or friend. Note that using this greeting at a man does not indicate homosexuality, but rather an example of how cool you truly are by showing that you do not give a fuck.
As said to a girl you pass on the street: "Sup girl!?"
Can also be used with a qualifing descriptor to highlight one particular girl out of a group: "Sup girl...........on the left"