Closed Head Injuries are Funny

Emily tripped over her blanket (quilty) tonight and hit her head on the vacuum cleaner. She proceeded to pretend (at least we're pretty sure she was pretending) to have amnesia. Em explained to Cathie that she couldn't remember anything that had ever happened to her. She kept asking Cathie questions about what she'd done today, like "Mom, did we go swimming today?" Wouldn't the joke be on us if she had permanent brain damage and memory loss?