Sleep is overrated

When people say sleep is overrated, who’s doing the rating?
Exactly what rating did sleep get?
And what rating should it get?
Are they saying that all sleep should be rated X?
Or NC-17, which is what X is now?
You can give a film X for sex, or for violence.
I hope they’re talking about sex, because nobody wants violence in the bed.
Because it’s a lot easier to wash sex stains out of the sheets than bloodstains.
Assuming that you survive the violence, of course.
Or you’ll end up wrapped in the sheets and buried in the woods.