My grandson had learned that "Goosing" someone meant pinching their bum/backside/posterior.. or whatever you call it.   There is a sign in the UK to warn of elderly persons possibly being on or crossing the road... a sign which shows a man walking with a woman. My grandson asked as we passed one of these signs "Grandad, why is that woman goosing that man on the sign"?   Until then I had not noticed the phenomenon.. she does appear to be doing just that. I will never look at those signs in the same way again.