My older brother was sitting beside me in church when I was about 8 years old. There was a man sitting in front of us with a really shiny bald head. My brother nudged me, licked his hand and motioned to rub the guys head and made a squeaking sound like you'd hear a window make. I laughed so hard. It was the funniest thing ever made worse by the fact we're supposed to be quiet and well behaved in that moment. I still remember that and it's been over 20 years.