A cop comes around a curve in the road and sees a bad accident. A man and a woman are both dead in the wreckage.
He looks up on the hill and sees a monkey waving his arms at him as if to say something. The cop says, "Hey, monkey, do you know what happened?"
The monkey mimes drinking a bottle. "They were drinking? What else?"
The monkey mimes smoking a joint. "They were smoking dope? What else?"
The monkey mimes sexual relations. "They were screwing? This doesn't make any sense. How did you see all of this?"
Monkey mimes driving.