In college had a Clown Trigger that was about 8 inches long. After a few beers roomates and I made up "The Trigger Club". You'd put a cube of food in the tank and wiggle a finger in the water up to the second knuckle for 30 seconds. If you pulled out your finger before, the clock restarts. Alcohol is a wonderful thing. Everyone who mooched a beer that came over was required to join the club.