Excalibur FartMaster Electronic Keychain 305 EXCALIBUR 305 FartMaster Electronic Keychain. Its the other end of the spectrum. Never silent, always deadly. Push the button to listen to digitally reproduced farts, loud ones, that will definitely get the attention of those around you. After just a few minutes with FartMaster, you will agree that it is the most fantastically funny flatulence, a festival of fathomless farts, fit for freethinkers like yourself and your friends.