When your jeans are too low, and your butt crack shows.

Showing one’s butt crack

Coined by hip hoppers and urbanites alike, this term is often referred to as a snoopism though its origins are unknown. It's an upbeat way of asking someone how they are doing, and may cause one to crack a smile in response.

The lack of having crackers

A way of saying "How are you doing?" used by, yet again, soda-drunk jr. high kids being their usual crazy selves.

to get started, or start

It means Whats Happinin'. OR Whats up?

same as crackin, just a little more animated.