A gangsta soup, not just any soup, like cup a noodle soup, but gangsta soup with 1337 h4x0r skills that aint nobody can touch. _Soup is from the Uber1337 DotNet era of betas... cuz you cant touch dat _Soup
creative way of saying "sup", which is abbreviation for "what's up", which means "what is up?" Which is asking a person what somebody is up to or doing.