That’s cool

when black people want to fight they pull up their pants and say "wassup then"

short form of "what's up"- simplified as a form of greeting, as in "hi."

If you use this work I fucking hate you. How the fuck am I supposed to respond. Do I say tHe SkY or nOtHiNg. If you are a road man can you tell me how to respond to your sayings cause I don’t get them?

An term of agreement.

A Gangster greeting. Another form of the simple "Hi!"

Basically it's just another way to say you trying lol fuck , without actually saying "I'm trying to fuck"