The turd that emerges AFTER you think that you are all done pooping. Sometimes, you have already wiped, and stood up, and maybe even washed your hands already, and then you get that feeling that you need to drop one more turd. That's the "Epilog."
The ending of a story; to bring conclusion and a sobering look upon the aftermath of a conflict. What most would consider a follow up to, but not a sequel to, a story epic.