As he explains in this interview, goes back to his deceased brother:
LSD — That actually ties in with the next line I was going to ask about, “I used to get free cuts.” That goes back to you and your brother, right? You would give haircuts and DJ?
MF — Yeah, Sub was the master, he had the ill technique with clippers, yo. The illest barber in the whole motherfucking world. Anyone would tell you that. I remember he did Clark Kent, from Superman. He put the Superman symbol on the back, and had “Clark” on one side, the illest letter style, yo. It looked like it was drawn on there. And the “Kent” on the other side. I had a picture of it, but I dont know where that shit is at. [Proudly] But that nigga Sub was the nastiest with the clippers, yo.
