Conversation Pieces - To Be (sick) or Not to Be (sick)

The scene: Living room of the Pank.  Desmond has been sick for about 5 days.  We skipped out on Disneyland and spent our vacation in a hotel room. It was a 3 day weekend, but Des was holding onto a nasty cough and a low grade fever on Monday, so we had decided to keep him home Tuesday. 

Monday night: 

Me: "Ok, time to get ready for bed.  I want you in bed early tonight.  You need rest. 

Desmond:  "I don't think I'm sick anymore.  I feel fine!  I don't need to go to bed early."

Me: "You must be really excited to go back to school, then."

Des: "Huh?"

Me: "If you're not sick, you can go back to school tomorrow."

Des: *cough, cough*  "I'm still sick.