Exploding Beer Mug

Glass Mug that explodes into hundreds of pieces of glass on command! Instructions included. You can tap on it with a stick, thump it on the table and pass it around to show everyone that it's genuine thick glass. After everyone is convinced, wave your hand over it and *poof*, the mug shatters into hundreds of pieces. Perfect for when the fat lady sings! Guaranteed to amaze!

Pictured inside plexiglass box for demonstration safety. Box is not required for trick.