Working at the Post Office, I am used to dealing with a moody public. So, when one irate customer stormed my desk, I responded in my calmest voice "What's the trouble?" "I went out this morning" she began, "and when I got home, I found a card saying that the Mailman tried to deliver a package, but no one was home. I'll have you know, my husband was home all morning! He never heard a thing!" After apologizing, I got her parcel. "Oh Good!" she gushed. "We have been waiting for this for ages!" "What is it?" I asked. "My husband's new hearing aid."