Dumplings are what's left of your shit that doesn't go down the toilet post flush. The remaining microturd will linger in the bowl until a 2nd flush is performed, and if not in a timely fashion can result in a rotten fart funk that will linger in the bathroom for an unfortunate person to find.
Make sure you courtesy flush because the plumbing here sucks, I don't want you leaving a dumpling here for me to find later.
The small secondary shit that follows the primary usually consisting of no more than one or two turds. Normally occurs following a rushed poop due to emergency circumstances. Some experienced poopers and Zen masters are able to save dumplings for later.
The dumpling almost always leaves the subject with the satisfied post poop relief that was so cruelly denied to him/her after the first run.
Jeez I´m going to miss my flight.... I´m going to have to chinese doggy-bag it and save the dumpling for when I board