participatory 

a word used instead of participation; commonly used by a teacher E.W.

If you do not stop fooling in my class your participatory grade will go down.

participatory by sexy turtle May 21, 2005

Participatory Geometry 

A term for basketball made by John Green of the Vlogbrothers. It was meant to explain basketball to nerds, inserting spheres into cylinders.

Boy: What are we playing in gym class?
Girl: Basketball!
Boy: Oh, you mean Participatory Geometry

Participatory Geometry by KatherineFromTamingOfTheShrew August 21, 2011

participatory porn 

Love porn that a person can go join in the fucking,suckingect. if they want. found in some night clubs ect.

John joined in that participatory porn.

participatory porn by Deep blue 2012 October 12, 2009