In Mark Jenest's Clever new cup & ball sobriety test, a coctail olive repeatedly vanishes and appears under a bartender's jigger. Mark then tops it off with the surprise production of not one, but two wine corks. They'll swear off the hard stuff after they see this! Jiggernaut comes complete with chrome-plated bar jigger, realistic olives, corks, fully illustrated instructions and Marks terrific comedy patter.

• Resets immediately
• Easy and fun to perform
• Fits in one pocket
• Fully examinable
• No bitter aftertaste!