A male driver gets stopped by police, and is asked: “Have you been drinking?”
The man replies: “Okay, yes, I have… how did you know, officer? Was I swerving across the road, or speeding?”
“No sir, “replied the policeman, “… nothing else can explain that fat ugly woman sitting next to you. “
This joke is included in the Black Book of Jokes. You can order it from here.