Homeboy 1: Man, what do you have on deck for the night?
Homeboy 2: Nothing much. Just this one chick I met at the club. She wanna kick it so I'm going to chill with her.
This phrase is an old shipping term. It was used to find out who was or was supposed to be on guard, doing duties, etc. This term later moved into the realm of baseball and is still used to this day as a description of who's going to be batting next.