Actual definition:
C.Y.S.I.D. = Choose your story Icon Duder is what it actually stands for. His Hottie Cy Sinthia (but not spelled that way) use to also stand for something but it has escaped me at the present along with her appropriate spelling.
On some of his worst days he has been called decisive Cy Sid, but most onlookers know him as Mag Guy. Mag Guy is his proffesional name because of his slighty embarresing real name.
Since your such a big fan, the extended story is his Dad was into baseball hence, Cy Young, One of the best pitchers of all time or atleast has a cooler name then Bob Feller, and his Mom was a fan of The Punk Rocker Syd Vicious.
