Bizarro Episode: The final episode itself, "Lumpus' Last Stand." Lumpus discovers how to turn paint into a cheap alternative for clothes, making him a hero of society. Two green moose travel back in time to see him be honored for his wonderful invention, bringing a statue made of all the world's dirty laundry. Then... it rains... washing off everyone's painted clothes. The future changes- the moose lose their antlers and body fat, and the Lumpus statue reverts back to a mountain of filthy clothes. Prickly Pines's people scramble to cover up in said clothes, then form an angry mob to attack Lumpus. However... a policeman shows up with a cow... and it's an older Heffer! Heffer says he's the actual Camp Kidney scoutmaster and Lumpus is an impersonator, who locked him up from the very start of the show. Lumpus gets put in a straightjacket and hauled off to prison. Despite this, Lazlo somehow sees a bright side, though Edward immediately calls him out for it. Finally, the campers, stuck in the buff, all walk offscreen, while Sampson gets the last line of the show, where he lampshades the whole ordeal and pretty much sums up why this is the last episode:
Samson: It's official. Things can't get any weirder around here.