"Wheelchair Racer" joke
Mabel has a habit of racing up and down the halls of the nursing home in her wheelchair, making sounds like she's driving a car.
One day, as she's racing down the hall, an old man jumps out of a room and says, "Excuse me, ma'am, but you were speeding. May I see your driver's license, please."
Mabel digs around her purse a little, pulls out a candy wrapper and hands it to him.
He looks it over, gives Mabel a warning and sends her on her way.
Up and down the halls she goes. Again, the same old man jumps out of a room and says, "Excuse me, ma'am, but I saw you cross the center line back there. May I see your registration, please."
She digs around her purse a little, pulls out a store receipt and hands it to him.
He looks it over, issues her another warning and sends her on her way.
Off she zooms again, up and down the halls, weaving all over the place.
As she comes to the old man's room again, he jumps out, but this time he's stark naked.
Mabel looks up at him and moans, "Oh no, not the breathalyzer again!"
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