It is a sign of the Apocalypse?

Tonight was eerie at our house. Why? Someone purporting to be our nearly 12-year-old son

• came home from school with tomorrow's homework already done, and worked ahead.
• volunteered to set the table "all fancy, like in culinary arts class." This meant extra dishes (bread plate) and flatware (two forks), and cloth napkins folded properly.
  
• helped clean up without grumbling.
• elected to turn off the brand-new video game and read in front of the fireplace instead.
• voluntarily trotted off to get a shower without being asked, even remembering to wash his hair.
• went to bed on time-- actually, a few minutes early-- without argument or delaying tactics.

I'm not sure whether I should count my blessings or ask for ID.