A wife was in bed with her lover when she heard her husbands key in the door. "Stay where you are," she said. "Hes so drunk he wont even notice youre in bed with me."
Sure enough, the husband lurched into bed none the wiser, but a few minutes later, through a drunken haze, he saw six feet sticking out at the end of the bed. He turned to his wife: "Hey, there are six feet in this bed. There should only be four. Whats going on?"
"Nonsense," said the wife. "Youre so drunk you miscounted. Get out of bed and try again. You can see better from over there."
The husband climbed out of bed and counted. "One, two, three, four. Youre right, you know."