A man tells a doctor, "I think my wife's going deaf. What can I do?"
The doctor says, "Well, try to test her hearing. Stand some distance away from her and ask her a question. If she doesn't answer, move a little closer and ask again. Keep repeating this until she answers. That way we can see how bad the problem is."
The man goes home, sees his wife and says, "Hi honey, what's for dinner?" He doesn't hear an answer, so he moves closer. "Honey, what's for dinner?" He repeats this several times, until he's standing right next to her.
Finally, she answers, "For the tenth time, I said we're having Pot Roast!"