There was a camera shop in Windsor ON, where the clerk would ask all sorts of trick questions in order to prove his mental superiority. He'd usually whip out a pitiful snap of a dog in the woods by way of extoling the virtues of fill flash. In the half dozen times I walked into the shop, I'm pretty sure he talked himself out of a sale nearly every time. When the shop closed and the troll was gone, I bought up their entire paper stock at pennies on the dollar.