Aka (a Deuce and a half) when one has a bowel movement, stands up to leave and by the act of standing, loosens another piece of feces and and one has to abandon the plan to leave the bathroom to go back,sit down and finish it again.
Also know as a gmc jimmy ton and a half truck Circa ww2.
A dude takes a dump facing the opposite direction, as in facing the tank. Simultaneously, a girl goes back-to-back on him a takes a dump. Same time. Same bowl. Afterwards, (or during, depending on taste) they reach around and pleasure each other manually.
A 2-step shitting method. The first motion is where you simultaneously shotgun dip, shit and flush using momentum. The second dip is where one shits any residuals nuggets and wipes the ass.