Talked to my grandparents tonight and my grandpa was in good form. My parents were arguing about how my dad likes to open windows to cool down the house, but my mother complained that he never puts the screens in the door so bugs fly in. To dispel the tension, my Grandpa shouted over the speakerphone, "Katy, Katy!" "Yes, Grandpa?" "I opened the window once and influenza!" Well timed. Very punny. Solid joke, Grandpa!