A Whoopee cushion, also known as a poo-poo cushion and Razzberry Cushion, is a practical joke device, used in a form of flatulence humor, which produces a noise resembling a raspberry or human flatulence. It is made from two sheets of rubber that are glued together at the edges. There is a small opening with a flap at one end for air to enter and leave the cushion.
To use it, one must first inflate it with air and then place it on a chair or squeeze it. If placed on a chair, an unsuspecting victim will sit on the whoopee cushion, forcing the air out of the opening, which causes the flap to vibrate and create the sound of flatulence.
1. Blow it up (not too much!)
2. Sit on it!