A more hip hop way of saying "etc", or a verbal way of expressing "..." It is said by those that have so much poppin' that they don't have the time or energy to explain what the "what not" is. This term should not be used by wannabe gangstas, as this will only serve to slash your street cred. People will know you have no substance behind your "what not."
"What are you doing tonight?"
"I'm gonna meet some people and what not."