tries to grab, push, or pull other with other hand. Making playmate fall seems to be aim of most interactions. 3. See video. harass Subordinate chimpanzee threatens dominant one. Adangs Tease. At Mahale older juvenile and adolescent males pester and threaten adult females by shake branch, slap, hit, throw branch, charge, etc. until females finally pant-grunt to them. Cf. tease. Bonobo adolescent males at Wamba pester adult males with threatening gestures, such as bipedal swagger or branch-dragging, and so dominate him. Termed as adolescent harassment by Kano. See video. head down hip up See stand with head down, bottom up. head tip See tip head. headstand Stand on ones head to solicit play and in social play. Done by mature and immature individuals. 7. See video. See also