A wife goes on a retreat for work. When she returns, she finds a pair of panties in her dresser that do not belong to her.
Furious, she questions her husband. The husband says, "I have no idea where they came from -- I don't do the laundry!"
So, the wife goes to the maid and questions her. Indignant, the maid replies, "Madam, how should I know? These panties don't belong to me. I don't even wear panties -- just ask your husband!"