press Force contact with shoulder, side or hip against another. Function unclear, but may initiate social play or aggression. 7. press down Restrain another under body to immobilize partner against substrate. Common in social play, such as wrestle and sometimes aggression. Cf. immobilize. See video. press neck with lower arm Press neck of wrestling partner with lower arm. See video. press nipple See fumble nipple. press object on Press branch, herb, etc. against playmate, thus indirectly applying force. Adolescent and juvenile males, e.g. Cadmus and Michio, used in play. See video. press teeth against back Adult male mounts another male, and mounter presses upper row of teeth against mounteds back, while mounter embraces other, thrusts pelvis, and has grin-full-open. Intensified form of mouth. Mount accompanied by nod and