A Ross

A cocktail made with top shelf tequila and tonic, often finished with a lime wedge and served over ice in a lowball glass. The cocktail popularized during the playing of the 2013 ACE/UTI international golf classic in Albuqurque, NM. It rapidly gained widespread appreciation throughout the United States and the civilized parts of Australia. The cocktail is responsible for a run top shelf tequila that exhausted the supply at a number of area hotel bars.

Bartender: "what'll it be, Mac?"
Patron: "a Ross for me and some for my mates!"