S.U.D.

Shitting upside down. When you take a shit while your upside down.

It's like have your own personal "Ground Hogs Day" S.U.D.

by Nymesis October 13, 2009

S.U.D.

Small Unintentional Defecation

Mike experienced a sudden S.U.D.

by Big Mike D. May 13, 2006