Back during the days when all grade schools (whether public or private) lasted almost all day, Meme (meh-meh) time was the mandatory scheduled nap time after lunch (which was 11:00 AM).
These days, our bodies tend to implement this life extending ritual on its own.
Ergo, the rule:
Kindly refrain from calling/textg between 2-4pm on weekends. My treasured nap loses its harmony.