SMG4: Mario Runs Out Of Toilet Paper is the tenth episode of Season 10 and the five hundred and sixty-fourth overall to be uploaded by SMG4.
This episode was aired on March 21, 2020.
Mario just wants to use the toilet :(
Mario has run out of toilet paper at this house. Desperate, he goes to a nearby 7-Eleven store to buy more, only to learn they were all sold out. Since he really needs to poop, Mario goes to Mushroom City and finds the Central District in shambles, as several citizens (including SMG4) are panic-buying toilet paper in a disastrous manner due to sudden shortages, and Fishy Boopkins does nothing but hold up a sign and yell "The end is near!" over and over. With all of the toilet paper stores sold out, Mario buys a pack from Bob (though he ended up trading Luigi for it as the cheapest pack cost 50,000 coins).
With no way to get home due to the ongoing destruction, Mario narrowly avoids obstacles (even using an old man as a shield) and eventually steals a car. The car, however, gets its engine damaged after a brief stunt. Mario then finds Toad (who is begging for help), and remembering his experiences with kart races, uses Toad to fix the engine and boost up the car. However, he ends up crashing it, resulting in the toilet paper he bought being destroyed except for one roll. He then finds that Papa John (the mascot of the Papa John food franchise) of all people the one behind the chaos and the toilet paper shortage. John states that he wants to cleanse the world of its sins (AKA murder the entire population) for no good reason, just for the hell of it (despite Mario stating that he could have a reason, such as race, religion, or even someone annoying him). John then summons four other food franchise mascots (Wendy from Wendy's, Ronald McDonald from McDonald's, Burger King from Burger King, and Colonel Sanders from KFC), and orders them to attack Mario, even destroying the toilet paper roll he was carrying, but thanks to stealing Sanders' KFC hammer, the plumber manages to kill the mascots (even insulting Ronald by saying "No Happy Meals for you" to sterilize him via a kick in the groin as well).
Angered, John teleports Mario to Pizza Hell. John then reveals himself to be none other than Satan of all people and tries to kill Mario by choking him to death. However, the portal that Satan used to teleport to Hell is still open, allowing the rest of the gang to throw toilet paper at him. The paper turns out to be his weakness (it removes John's stains, his power source), and the gang takes advantage of it to throw more paper at him, killing him and ending the apocalypse and toilet paper shortage. Happy, Mario escapes from Pizza Hell and takes several toilet paper rolls from Luigi to finally poop. Unfortunately, the intensity resulted in Earth exploding.