Rigger "bounces" when he wants to play.
He will be on the back of the chair or on the floor or even in our laps and he will start to "bounce" his butt up in the air by jumping with his back legs and keeping his body flat on whatever surface he is on. We can make him do this by bouncing in the chair and he will perk up and bounce back.
Hard to describe but the CUTEST thing I have ever seen!!
He is so human!