hubby goes to his secretaries house after work to have sex... after a couple of sessions he asks the secretary to rub his shoes on the lawn and wears them and goes home to his wife...
Wife: And where have you been all this while?
Hubby: Umm... I was having sex with my secretary...
Wife: You lying Son of a biyatch, look at your shoes, you've been golfing again with you pals haven't you?