S is For Crazy is the 59th episode of the finale season.
plot
Lumpus is at the Beaver's cabin and tells him that he is bored until Samson starts acting crazy (along with Lumpus) after a jellyfish attaches itself to his head and Samson and Lumpus start pulling pranks on everyone, Including Prickley Pines. Slinkman has been getting complaints about Samson and Lumpus and sends Lumpus to his room where Lumpus sucks his thumb. However, Samson turns the tables on him by nailing his entire bedroom to the ceiling. Lumpus starts to get irritated and then he becomes scared out of his wits when he sees that Slinkman is now under a pile of salt. Lumpus restores Slinkman back to normal and Slinkman points out "That was not funny", Though Samson keeps laughing at Slinkman's expense and gets out of Lumpus's cabin.After Lumpus visits the aardvark, The phone rings and Lumpus answers it and whoever is calling him wishes to speak to Samson but Lumpus states the rule "Campers are NOT allowed to get on the horn", starts insulting the caller and dares the caller to come to camp as Slinkman tries to stop Lumpus. Lumpus feels confident until Slinkman points out that Lumpus accidently insulted Samson's parents. Lumpus realizes this and hides in his shirt and screams. Slinkman then urges Lumpus to get the jellyfish off of Samson's head. Lumpus tries to get the jellyfish off, but Samson won't let him do it and Lumpus still tries several methods to get the jellyfish off, but samson's parents are on the way and Lumpus has an idea. Samson's parents show up and Lumpus has Samson's head covered with a paperbag with a drawing of Samson's face on it to fool Samson's parents. However, Samson's parents are revealed to be jellyfish and Samson's dad, Stanly, who has a wife, who is also Samson's mom, Lace, removes the paperbag and sees that the jellyfish that has fried Samson's brain turns out to be his friend, Jimmy and Jimmy gets off of Samson and his parents take Samson home.
trvia
Samson's parents both turn out to be jellyfish.
It is revealed that samson was raised by jellyfish.