What the fuck is that? You better be pretty fucking famous to pull that shit. A number on a jersey is by far the most important identification tool often superseding names and even logos. Not for the K-MAN. To prove the K-man isn't Madonna style one name famous i did some exhaustive research (google) and the only reference is as follows:
Etymology: Seinfeld (episode #17)
1a. Referring Cosmo Kramer
1b. Term used by Jerry on June 26, 1991 when talking to George.
JERRY: I just don't think you should go alone. Can't you wait till after my set?
GEORGE: It'll take to long.
JERRY: Take the K-man. A little support..
GEORGE: (Unsure) I don't a..
KRAMER: Take me where? Where?
Photo: My main man Jersey Jay