a quick karate chop-like strike to the exposed underarm of another. Once perfomed, the striker must exclain, JOVAN! in triumph of his/her success. If the striker\'s hand is caught in the armpit of the target, the target then gets to perform a \"double jove\" to both underarms of the attempted striker. this complicated process encompasses many special rules which change almost daily. it originated in 1999 in pelham, new york.