A cocktail similar to a Bloody Mary, but instead of mixing vodka with tomato juice, a standard American commercial beer is used, preferably pored from a can. Bud Light, Coors, or Miller Genuine Draft are the preferable brands to use in a Bloody Gary. Dudes named Gary don't drink Heineken.
"I'm so hungover from last night. I think I'll have a Bloody Gary at brunch."