Jon is trying to hang a wide cantilevered shelf along a wall in our bedroom, and after two frantic hours of using every tool in his collection to find a sturdy enough spot in the rickety lathe and plaster, he lets out a roar so full of triumph that it sends waves through the water in the fish bowl.

"AT LAST! I have found a stud!"

"What finally worked?"

"I just happened to walk by a mirror, is all."