Tom came home from the casino one night and was met at the door by his wife. Much to his dismay she hit him on the head with a rolling pin?

‘Why did you do that?’ he asked.
‘I found a piece of paper in your jacket pocket with the name Mary Lou written on it,’ she replies.
Tom explained ‘That's the name of a horse I got a hot tip on.’ She accepts his explanation and apologizes for whacking him.

A few days later, she nails him on the head again, even harder. When he regains consciousness, Tom asked, ‘Why on earth did you hit me again?’

‘Your horse phoned.’