Whoopee pillow
A fart pillow or whoop's pillow is a joke that is an inflatable hollow body, which today is often made of plastic and can be filled via a valve in such a way that the air cannot escape independently. If the air suddenly escapes due to an external load, a flatulence- like noise is generated. The rise in pressure inside forces the air out of the valve. According to Bernoulli's law , a negative pressure is created in the valve and the air flow is repeatedly interrupted by the ambient air pressure.
The whoopee pillow is used to embarrass or embarrass unsuspecting people who unintentionally sit on it and thus exert the necessary pressure through their weight. For example, it is camouflaged on seating.
history
The Roman emperor Elagabal used the first whoopee pillows . The production of modern whoopee pillows began in the 1920s. Employees of the JEM Rubber Co. from Toronto had experimented with rubber scraps and invented the whoopee pillow. It consisted of two identical, balloon-shaped rubber skins that were glued together except for the opening at the point on the edge that is typical for a balloon. This was where the gap was created through which the whoopee cushion is filled and which, due to its adhesive properties, could be compressed so that the filling remained.
Nowadays whoopee pillows are mostly made with a foam filling and a mechanical valve. If the pressure on the hollow body is reduced, the foam filling relaxes and leads to the cushion taking in air again via the valve, which means that a noise can be generated again without the intervention of the user. Fast sequences of the fart sound function are also possible in this way.
According to the Guinness Book of Records , the largest joint whooping pillow-sitting ever took place in Illinois with 3,164 people .
Web links
Individual evidence
- ↑ Whoopee Cushion got first airing here. Toronto Star , accessed March 31, 2008 .
- ↑ Dörthe Hein: Guinness Book of Records - whoopee pillows and other top performances. stern.de, August 27, 2005, accessed December 14, 2014 .