Three old ladies, Bertha, Gertrude, and Agnes, were sitting on a park bench, enjoying the afternoon sun. A dirty old man in a trenchcoat walks up to Bertha and flashes her. Bertha has a stroke.

Next, the dirty old man walks up to Gertrude and flashes her. Gertrude has a stroke.

Finally, the dirty old man walks over to Agnes and flashes her, but Agnes has arthritis really bad and can't get her stroke.