SpongeBob SquarePants (1999)

S14E7 Don't Make Me Laugh

SpongeBob unexpectedly starts laughing at everything, driving everyone around him crazy. His uncontrollable giggles and relentless humor become increasingly irritating to his friends and neighbors, who struggle to cope with his new obsession with finding amusement in even the most mundane situations. As his laughter echoes throughout Bikini Bottom, the residents begin to wonder how they can bring back their cheerful friend without his constant chuckles getting in the way.