Place where one stores sexual pleasures... ie. porn, ky jelly, condoms, rulers, sex dice, etc.
I got to put this jelly in my cow box.
(while one's room is being raided)
Kristen: "Oh boy what is in this COWBOX??"
Steph: "Lets find out!!"
Kristen: "HAHA PORN, KY, and a TAPEMEASURE!!!?"