Definitions by Ryan Daggett
Wet hippo
When a man lays on a water bed as a very large women gets a running start and jumps on the man and the water bed explodes.
Trudy (weighing about 300 pounds) jumped on Jim and the water bed exploded and flooded the room. This is referred to as a wet hippo.
Wet hippo by Ryan Daggett April 6, 2011