One night, as he finished his last beer, the doorbell rang. He stumbled to the door and found a six-foot cockroach standing there. The bug grabbed him by the collar and threw him across the room, then left.

The next night, after Joe finished his fourth beer, the doorbell rang. He walked slowly to the door and found the same six-foot cockroach standing there. The big bug punched him in the stomach, then left.

The next night, after he finished his first beer, the doorbell rang again. The same six-foot cockroach was standing there. This time he was kneed in the groin, and hit behind the ear as he doubled over in pain. Then the big bug left.

The fourth night Joe didn't drink at all. The doorbell rang. The cockroach was standing there. The bug beat the tar out of Joe and left him in a heap on the living room floor.

The following day Joe went to see his doctor. He explained the events of the preceding four nights. "What can I do", he pleaded. "Not much, I'm afraid", the doctor replied.