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You spot a guy drinking a Guinness. When he is close to halfway finished with the drink, you go up to the bar next to the person, order a small shot of Baileys and Jameson, drop your shot glass into his glass, shoot it, and walk away.
Guy drinking a pint of Guinness: "What the hell was the that about?!!!"

Irish Carjacker: "YOU JUST GOT IRISH CARJACKED!!!"
by DirtyPoe November 23, 2011
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