Excalibur BurpMaster Electronic Keychain 112SG EXCALIBUR 112SG BurpMaster Electronic Keychain. This handy keychain is a wordless way to get a laugh anywhere you go. It holds the key to making your friends laugh. Replay its builtin belch soundeffects at the touch of a button. Each burp has been carefully recorded and is an authentic recreation of an actual bellybuster. Think you are the real BurpMaster. Try keeping up with its complete, burpedout alphabet. From A to Z in a stream of stomach eruptions, it spells hilarious. Six different burps to choose from.