Linda slapped her husband on the back of the head.
“What was that for?” cried her husband.
“I found a piece of paper in your pants with the name ‘Mary Lou’ written on it,” she said angrily. “You better have a good explanation!”
“Now, sweetheart, calm down,” said the husband. “I was at the track last week and that was the name of the horse I bet on.”
Later that same day, Linda walked up to her husband and smacked him hard on the forehead.
“What the heck was that for?” he demanded.
“Your ‘horse’ just called.”