This is based on opinion. Please don't list it on a work's trope example list.
Nightmare Fuel / Cloudy with a Chance of Meatballs
Particularly during the third act, when the food machine goes haywire. The food machine gets covered in a gigantic "meatball", and the heroes have to travel inwards through the chasms of mutated food a la Armageddon to defeat the machine.
Also, Steve fights the gummy bears- he rams his hand into it, RIPS OUT ITS HEART AND THEN EATS IT!
Although that borders on a Crowning Moment Of Awesome AND Nightmare Fuel at the same time.
And that's to say nothing of the giant mutant roast chickens hanging from the ceiling that devoured Brent.
Who then proceeds to reposition himself inside the presumably live roast chicken and wear it as a suit.
The Mayor immediately begins gorging himself on the food and ends up morbidly obese, needing a scooter to get around. The scene where he is excited about bigger portions and then devours a gigantic hot dog whole is pretty unsettling, the way he's been utterly consumed by his own gluttony.
When the food starts getting bigger.
Most of Flint's early inventions cause this., I.E The Ratbirds