branch Fig. 34 Sexual skin: Sexual skin often bitten by adult males, so deforming shape shake arm, abduct Sit and shake horizontally-held arm towards another, in mild threat, often accompanied by cough bark. Cf. raise arm quickly and hit toward. 5. See video. shake arm, adduct Sit or stand bipedal and shake horizontally-held arm at another, to come closer or solicit play. Probably originated as intention movement of grab, grasp or hug. Juvenile male, Xmas, once shook hand above waters surface while looking down at his reflection. Sometimes in threat, if shaken quickly. See video. shake back and forth See sway woody vegetation. S shake back and forth with four limbs Cling to and shake tree trunk forward and backward using pushing force of feet and pulling force