The term "sigma" has become popular in recent years meaning someone who is just a true alpha. A "sugma sigma" is just another form of a sigma, however, tends to be used for more retarded sigmas.
Bob: Bro have you seen Dave! He's ripped! He's a sigma!
Bill: Ya true but he's so dumb that he thought if he stood on a copy machine he would clone himself. He's such a sugma sigma