Gavin's Game - "Sleeping"

Gavin has been doing this thing for at least a month where he pretends to sleep. I can't believe a 2 year old knows how to pretend things - but he does. Sometimes he'll lay his head to the side and close his eyes and say "Mom, Mom".... so I'll look and say quietly "oh no Gavin is sleeping, shhhhh" and he'll 'wake up' and laugh and giggle - then 'fall asleep' again. It's the funniest thing. He also has been feeding his animals and he diapered the stuffed dog and elmo. hmmmmm