Timothy won't eat his food. He's warned that if he continues to leave it, the Spaghetti Man will snatch him and turn him into pasta, which is exactly what happens.
Timothy frequently throws tantrums at mealtimes and is visited by a spaghetti-smelling poltergeist-like figure. It's suggested by his parents that it was the Spaghetti Man, who kidnaps children that refuse to eat their dinner and takes them to his pasta factory but Timothy isn't convinced, but his actions (and his mother's patience) are tested when he is served toast for breakfast.—D. Alistair-Years