Two old ladies are in a car... They're driving down the street when suddenly they pass a red light. Dorothy, who's sitting in the passenger's seat thinks to herself, 'oh well, Matilda is getting pretty old and her vision isn't what it used to be. She probably didn't see that red light, happens to everyone." They drive a little bit more and pass another red light. Dorothy is thinking to herself, "alright two red lights is no coincidence.. maybe I should say something.. well better not, Matilda always gets anxious when I comment on her driving" So they continue on driving when they go through a third red light. This time Dorothy speaks up and says, "Matilda! what's going on?! that's the third red light you've gone through!!" and Matilda answers: "Oh, am I driving?"