Husband, Wife, Drugs
A man is in the hospital unconscious, with his wife beside him. He wakes up and says to his wife, "You're sexy," then passes out again.
His wife was surprised, because he never said that before.
Five minutes later he wakes again and says, "You're pretty."
The wife asks, "What happened to 'sexy'?".
He replies, "The drugs must be wearing off."