What is whoopee cushion, how to make it so funny?

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 can bring you much fun on April Fool’s Day or whenever you trick on someone. 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, then place it on a chair or squeeze it. Some whoopee cushions can be self-inflating. 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 a loud, flatulence-like sound. Loosely imitated, this sounds like "BLLLAPP!".

Features:

Once someone sits on it, the air in the cushion will escape.

put a whoopee cushion in someone's chair as a gag gift, bring you much joy and fun.

Made of durable material which can be used over and over.

Using this funny toy whenever you want to trick on someone.

A surprising gift to your good friends.