Usually between two humans (men or those w hair rump holes) where they clean each other like primates and vacuum the debris in one’s rump hole
Had a Darwin dingleberries sesh w a good homie who could t get the debris off there backside
T = Toilet
P = Paper
Dingleberry... See Dingleberry
Erick: How'd it all come out?
Betty: It was exquisite except I think I might have a TP Dingleberry.