Here's one of the best things about being a mother ... (and I'm pretty sure God made my children sign a waiver before coming to Earth, relinquishing all rights to this part of their body):
(See how he's so nonplussed at the pinching? He was seriously concentrating on a game yet my cheek pinching is a simple fact of life around here. He's so used to it he could probably win the Scripps National Spelling Bee with me hanging off his face.)
I could do this all day. And sometimes I do.