|1.||Snap a deuce|
The act of having to use the sphincter to break apart a shit, in order to make it into a size that can be managed more easily by your shitty toilet.
Can also be used to describe the act of shitting.
"Where's the crapper, I gotta snap a deuce!"
|2.||snap a deuce|
As above, but can be signaled by snapping one's fingers.
Snap fingers, leave index and middle finger extended after snap.