One can only imagine what a sip of the most expensive bottle of single malt scotch whiskey would taste like, says the Association of Mature American Citizens [AMAC]. All you need is a couple of million dollars to find out. The auctioneers at Lyon & Turnbull in Edinburgh, Scotland say they expect that the Macallan Distillery’s record-breaking, nearly six-foot tall, 82.16 gallon bottle of its…