POOP! 4: Hold It In!

From season 101 and a sequel to POOP!, POOP 2!, and POOP! 3: The Big Dump. SpongeBob is afraid to poop again and holds his poop in.

Events
It shows a flashback of POOP! 3: The Big Dump, then the screen turns to black and then it says, POOP, (P-OOO-P.): Also known as feces, waste product