What is "flip-o-potamus"

Flip-O-Potamus is a Milton Bradley game released in 1986. Flip-O-Potamus is part of the T.H.I.N.G.S. family of games (Totally Hilarious Incredible Neat Games of Skill). With Flip-O-Potamus the goal is to flip as many as possible of the eight marbles into the hippo's mouth before the spring timer stops. On the back of Flip-O-Potamus is a timer arm which is pulled counterclockwise to start the timer. As the timer goes, Flip-O-Potamus' mouth opens and closes.