is the practice of removing some or all of the foreskin (prepuce) from the penis. "Going jewmando" is reputed to have begun with jew-kune-do and other special jewish forces military units, in which some soldiers removed their foreskin to prevent chafing.
I am going jewmando today; really letting it breathe
Jewish Commando, Expertise in hiding within attics, under floorboards, secret rooms and hollowed out walls, Hired present day by the U.S. Army to infiltrate Swedish facilities. Highly active paramilitary group in World War 2.
General: "That's it, call out the Green Berets, send in the Jewmandos."