A worried father telephoned his family doctor and said that he was afraid that his teenaged son had come down with V. D.
"He says he hasn't had sex with anyone but the maid, so it has to be her."
"Don't worry so much," advised the doctor. "These things happen."
"I know, doctor," said the father, "but I have to admit that I've been sleeping with the maid also. I seem to have the same symptoms."
"Not only that, I think I've passed it to my wife."
"Oh God Dammit," said the doc, "That means we all have it!"