Not The Brightest Bulb

(I am purchasing an extendable pole to change out light bulbs in my nearly twenty-foot-high vaulted ceiling.)

Cashier: “Wow, I haven’t seen one of these. What’s this for?”

Me: “It’s for changing light bulbs.”

Cashier: “I don’t see why you’d need one. At my house, my dad changes the bulbs. He’s really tall!”