whoopee cushion[hwo̵op′ē, wo̵op′ē]
a device for playing practical jokes, consisting of an air-filled pillow with a valve that emits a sound like that of gas being expelled from the bowels when someone sits upon it
also sp. whoopie cushion
(plural whoopee cushions)
- An inflatable bag containing a valve at its neck that retains the air in the bag until pressure is put on it (usually by someone unintentionally sitting on it after it has been placed on a chair by someone else as a practical joke), when the air is expelled with a sound similar to that of someone breaking wind.