'My Pet Monster' is a 1987 animated series based on the plush toy character of the same name, a blue, furry, horned creature with orange chains. The thirteen-episode cartoon, unrelated to the 1986 direct-to-video special, is about the creature, here named Monster, who lives with a young boy named Max and whose existence is kept a secret from the world aside from Max's sister and best friend.
S1E3: Boogie Board Blues Edit
As the gang prepare to go to the beach for the Junior Boogie Board Competition, Monster tries on a vest, only for it to inflate to massive proportions and stick out of the treehouse. Unable to find and reach the plug needed to deflate, Max is forced to pop the vest with a pin.