The thing is, though, that the people who really do nothing are already doing nothing. They provide zero or negative productivity at work and only do the minimal required to not get fired. Or they bounce from job to job eating up everyone's time.
I'm more concerned with people who decide that they want to do something destructive. Staying up til 4am is possible when the food check comes no matter what. Deciding that you want to ruin someone's life by not letting them sleep ever seems like it could easily become a pastime.