noun: A specific dance move normally executed in the corner of a dance floor while seated. Necessary equipment includes sunglasses worn halfway down the nose and a glass of whiskey or bourbon over ice, which is to be swirled in such a way as to create a necessary "clink. clink. clink." sound. Also, starring at hot girls that are way out of the shaker's league is generally a must. The proper Bourbon Shake makes everyone uncomfortable, including the shaker.
That Guy: Did you see that guy who sat in the corner all night checking out those girls?
That Other Guy: Yea. He was doing the Bourbon Shake!