Anyone up for a round of What The Heck Is Going On In This Picture?
My guess is that it’s an elaborate prank. The man (presumably named Jones) is working with the man in the black suit. The woman and her son think that Jones is detailing their car, but really they’re just painting their names on the door. The man in the black suit is eyeing the boy because it seems the boy is about to discover what they’re actually doing. So the man in the black suit discreetly taps the woman’s heel with his cane in such a way that it causes her to pantomime the swinging of a golf club, hoping that this will distract the boy long enough for the two men to run away giggling.