Yo-yoing

"Yo-Yoing" is the act of propelling ones excrement to the apex of deployment; only to halt the action then reverse the motion at a high velocity in a reciprocating manner for the purpose of sexual stimulation or to massage the male prostate with orgasmic intent.

Aka. Sucking and pushing poop in and out of your butthole making yourself cum

Do you yo-yo while you poop?

James has been away for 2 hours, I suspect he is in the bathroom Yo-Yoing. No one takes 2 hours to poop. He always returns in a euphoric state.