999: Killer On The Line (2016)

S2E9 Supersize Timmy

Timmy inadvertently munches on a tomato cultivated with Miracle-Grow fertilizer, causing him to balloon into a colossal sheep resembling King Kong. Shaun faces the challenge of keeping the enormous toddler hidden while searching for a way to shrink him back down to size. Ultimately, a Duck consumes the leftover growth spurt, swelling to a size even larger than a house.