Imogen: Mummy, Charlie is lost!
Me: Who is Charlie, honey?
Imogen (exasperated): Charlie is my pet fly, Mummy! She came home from Calgary with me in Nanny's car and now she's lost!
Me: Do you think maybe she stayed in Nanny's car to keep Nanny company?
Imogen: No. I think she stayed in Nanny's car and then Nanny killed her with a fly swatter.