Every night, Harold would go down to the liquor store, get a
six pack, bring it home, and drink it while he watched TV. 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, and left.
The next night, after he finished his 3th beer, the doorbell rang.
He walked slowly to the door and found the same six-foot cockroach standing there.