Mike O"Leary is reading the paper when his wife comes up and whacks him on the head with a skillet.  Stunned, he asks, "What was that for?"

"That was for the piece of paper in your pocket with Katy's names written on it."

"Oh," he explains, "two weeks ago I went to the races.  Katy was one of the horses I bet on."

His wife apologizes for being suspicious.

Three days later Mike comes home from the ball game and his wife hits him on the head again with a skillet.

He protests, "Now, what in heaven's name is that all about?"

She replies: "Your horse just called."