Mexican tug of war

When a person takes a firm poop into another persons butt and then two people simultaneously use the hard poop as a double sided dildo in a contest of bumper butts pushing and pulling using their ass muscles to see who has the strongest butthole whoever maintains best grip and pulls the turd out of the other participants butt wins.

The two lovers in a unifying action completley disregarding cleanliness or morals played a game of mexican tug of war.