The meaning of the song is to or at least it seems to be making fun of or stereotyping the way Gangsters / Thugs act on movies or so or in other songs by many artist. I find another point is to entertain the listener by giving a funny song with a decent tune and someone dirty lyrics one more reason is to have background music (you cannot sing aloud to your parents) while searching the web, sketching, being stupid, or ignoring annoying family members.