Xmas, hit ground with fist as solo play. Adolescent male, Cadmus, did so with fists alternately few meters from large grooming clique. Function probably attention-getting. See video. hit toward Threatening gesture. Goodall: When an animal is threatening it will make a hitting movement with the back of its hand. This gesture is usually accompanied by a soft bark. It may be directed toward chimps, other primates, snakes, large insects, birds, and so forth. Cf. raise arm quickly and shake arm. 5. hit with long branch See club. hold body part in mouth Hold by mouth body part such as fingers, hand, toes, foot, nape, limb or back of companion, usually in play. 5. See video. hold down See press down. hold finger in mouth See hold body part