When a waitress brings me a refill, and says the normal: 'Would you like to keep your straw', I often say something like, would you mind moving the staw to the new drink, I'm handicapped. They always do it. It just proves you don't need the IQ of a rocket scientist to serve burgers and fries.
Do you ever wonder when they bring you a drink with a straw already in the drink and just the top of the straw wrapping still on the straw how they do this without touching your straw? LOL (Not with their elbows!!)