To be sitting in a started car at a stop sign, or the middle of the street for longer than usual.

Usually talking to someone, buying drugs, just watching people, looking for things in their car.

This usually happens in ghetto areas.

sittin' on it is a term used for men who want to get laid. it is a very abrupt way of asking but hey you gotta get laid right?

with 3 people in the back seat, the one in the middle is sittin bitch

Ready to throw down with a bitch

To reach your peak when smoking marijuana.

To be content with one's current state of mind, situation, or mood.

You have a giant load of money ready for a giant purchase.