Excuses, excuses

By now, I'd thought I heard all the excuses from Lucas for coming out of his room at night, when he's supposed to be sleeping:

• I'm scared.
  
• I heard something.
• I'm not tired.
  
• I can't go to sleep.
• I don't know how to go to sleep.
• I want to see what you're doing.

But Lucas just came out and informed me that he's turning into a shark. He pointed to his calf and said it feels like he's growing gills. I inspected his leg and told him I didn't see any sign of gills. He said they're the kind that only he can feel.

I told him to go back to sleep and that if he wakes up as a shark-boy, I'll find a big container that he can go to school in.

This seemed to appease him and he went back to bed. And I haven't heard a splash out of him since (about 10 minutes).