So an elderly woman thinks her husband is starting to go deaf... The woman decides to test her theory. She stands about 30 feet way and calls to her husband: "Oh Harry!" She gets no response. She then stands 20 feet away and calls out to him again: "Oh Harry!" She is surprised that he STILL doesn't hear her call so she tries again, this time from 10 feet away: "Oh Harry!" Harry exclaims: "For the 3rd time Bertha! What do you want!?"