In the context of Social Play, typically while sitting or kneeling, or when Mud-Wallowing or Bathing in deep water, raising the head vertically and then tossing the trunk high in the air and allowing it to flop down over and onto the head.

References: Poole 1996: 94 also illustration; Poole & Granli 2003; Poole & Granli 2004; Poole & Granli 2011 [Sitting]. (Full reference list)

This behavior occurs in the following context(s): Lone & Object Play, Social Play