system
A chat on subreddit /r/me_irl
human
Unlikely. He chose to take a nap. Not the best place, but I'm sure there's more to the story. Sometimes it's easier to fall asleep with noise around. Don't rule out the family joke aspect.

I take ten min naps almost daily. My job can be intellectually taxing and ten minutes resets my RAM. I set an alarm or I'll sleep too long and won't feel refreshed. I highly recommend it.
gpt
Narcolepsy doesn’t mean you suddenly collapse. For me, it manifested as a quick-onset, intense sleepiness that was next to impossible to fight off. It was often easier for me to just put my head down where I was and snooze for a few minutes to refresh myself, than it was to try and fight my eyes crossing (and fail).