This burger is the Aged Patty or the Magic Sandwich - a rotten Krabby Patty that appears in the episode Cuddle E. Hugs. There Squidward found an old Krabby Patty and wanted to throw it away, but SpongeBob tells him that all patties can't be wasted. He eats it to prove his words but then he realizes that Squidward was right. SpongeBob with Poisoned Burger Sticker - Bon appetit!