Originated during the 2003 Francis Howell North tennis located in St. Charles, Missouri. The word is based around Kirk M. the #1 player for the class of 2005. When Kirk would pull of bullshit shots,which happened very frequently, the opponent would be "kirkumcised". The word later got used for when kirk made any good shot, not necesarily a bullshit shot.
(Kirk hits ball into net and it rolls over to opponents side) Kirk says, "Hahaha, my net, you were just kirkumcised bitch."
Oponent says, "Fuck you kirk, your such a lucky bastard, go to hell"
Kirk says, "HEHEHEH"