Peekaboo Surprise!
My dad shaved off his long-time moustache when I was 7, and when he came home from work that day it kind of freaked me out.
Here's guy with a beard playing peekaboo with his young daughter, by covering his head with a blanket. Then he got up and shaved, came back, and kept playing. And when she saw him without the beard, she was NOT happy about it.