A man returned home from the night shift and went straight up to the bedroom. He found his wife with the sheet pulled over her head, fast asleep. Not to be denied, the horny husband crawled under the sheet and proceeded to make love to her.
Later, he hurried downstairs for something to eat, he was startled to find breakfast on the table and his wife pouring coffee.
"How'd you get down here so fast?" he asked. "We just made love!"
"Oh my God," his wife gasped, "That's my mother up there! She came over early and had complained of having a headache. I told her to lie down for awhile."
Rushing upstairs, the wife ran to the bedroom. "Mother, I can't believe this happened. Why didn't you say something?"
The mother-in-law huffed, "I haven't spoken to that jerk for fifteen years and I wasn't about to start now!"