Because what do you in Ireland? "You drink whiskey!" Realistically, you could also have a pint of Guinness, a Ballygowan, or a Barrys, but Shia opted for the hard stuff when he was visiting "his girl" in Ireland recently - which led to this unfortunate incident involving all the bottom pinching, and therefore his arrest.
We'll let him recount the tale. It should seem tragic, especially in light of recent events, but man Shia can tell a good story.