The
act of rubbing one'
s anus with another person'
s anus.
Akin to tribbing, except with assholes.
Charles: Hey
man, have you seen Willy Wanker and the Trubbing Factory? Or
Alice in Trubberland?
Rodney: No, but that sounds hot. What's trubbing?
Charles: Trubbing is when two people rub their buttholes together. Imagine tribbing but with less vagina, and more anus.