Weiner of Our Discontent

S4, E18: Roger has been behaving like a selfish brat for years, and Stan has had enough! When he calls Roger out, he declares that he has in fact been sent to earth as "the decider" to determine the fate of man kind. Stupefied by his outlandish statement, Stan challenges Roger to prove it and when they discover the truth about his real purpose for being on Earth, Roger is crushed and Stan is tickled pink to have finally won one. Roger struggles to get a grip on reality until a fateful crate of hotdogs takes center stage at Steve's hot-dog eating contest and Roger gets to decide who lives and who dies.