Lacking in a 'Sense of Humour' can cost you

I am standing in line at a popular video rental store waiting for my turn to pay for my rental. I have my hands in my pockets and I am fingering this Save $0.50 coupon on my next box of Froot Loops. I must have forgot to use it at my last trip to the grocery store? I turn to my wife and I ask "Do you think this girl has a sense of humour?" (I am referring to the clerk, a young teen that is going to be serving me in a few minutes). With a quick glance my wife says "Yes, I think she has a sense of humour". On that note I step up to the counter and show my rental card and the movie I want to rent. With a cheesy smile on my face I extend my arm with mechanical precision, like I was in the Seinfeld Episode: The Soup Nazi and I say "I have a coupon". The young lady takes my coupon and quicky looks it over. I am ready to have a good laugh with her. She should say "Nice try", but that doesn't happen. She picks up the bar code reader to make the coupon good. 'Beep', the computer complains. With a furrow in her brow she looks on the computer manually, looking for a matching coupon. She tries to scan it again, 'Beep', the computer complains again. She quickly types in a override code and gives me $0.50 off my rental. She never once looked up at me to witness my big cheesy smile that would have conveyed 'the jokes on you' . My wife had to leave the store ahead of me , she is laughing so hard. =)