I would have to say Lil Wayne and Eminem. I'm not really a Lil Wayne fan, but he has quite a few songs with some SICK lyrics. And almost all of Eminem's stuff is great.
Sports Bettor - DM me if you have credit accounts.
Eminem is real, but Immortal Technique talks about like social issues and such and stuff like that. They both have crazy lyrics. Lovem em both, Eminem better though.