We went for a walk this evening, and suddenly out of the blue, Ember said:
Em: Mummy, I like fish fingers again.
Me: Do you?
Em: Yep, I like them for my dinner.
Me: Where did you have fish fingers?
Em: At my home!
Me: You haven't eaten fish fingers since you were about two... Have you had them somewhere else recently?
Em: No, I just remember them from when I was three and I like them again now.
Me: Ok, we'll try to get some for you then. Do you think they're really made out of fish fingers?
Em: No! Fishes doesn't have fingers!
Me: Oh, don't they?
Em: No! Fishes just has slippers!
Of course... silly me!