Man, the whole Scooby-Doo curse thing is such a wild rabbit hole! Most fans trace it back to that bizarre 13th episode of 'The Scooby-Doo Show' titled 'The Spooky Fog.' In it, Scooby and Shaggy accidentally disrupt an ancient ritual while scarfing down snacks in a supposedly haunted lighthouse. The fog rolls in, and this creepy voice whispers about a 'eternal hunger' curse. Later episodes kinda retconned it into a running gag—like Scooby’s endless appetite being supernatural, not just gluttony.
What’s funny is how the franchise plays with it. 'Scooby-Doo! Mystery Incorporated' leaned HARD into lore, suggesting the curse tied into some bigger cosmic horror. Like, suddenly Scooby’s not just a scaredy-cat dog but a pawn in this eldritch game? Wild stuff for a show about unmasking janitors in ghost costumes.