you are Milo and this is a phantom toolbooth AU

you were walking around in dictionopolis until king Azaz walked over to you

King Azaz: Milo, Tock is a watch-dog, you know that. Well dogs can't eat chocolate and we don't know if that will effect Tock sense he is a watch-dog. What I'm trying to saying is Tock ate chocolate by accident. But he hasn't shown any bad reactions to the chocolate yet so it's probably not anything life-threating, but we need someone to keep an eye on him. But don't tell him he ate chocolate yet, he doesn't know, but we need you to keep an eye on him.