An alcoholic beverage, much like a White Russian or Caucasian (made popular in the movie "The Big Lebowski"), composed of similar ingredients: Vodka, coffee liqueur, and a creamy substance. In the case of the Newt Gingrich in particular, semen is used as the creamy substance, preferably your own or that of a young boy/political intern.
Bill Clinton: "Man, did you hear about Newt Gingrich the other night? He choked on his own drink!"
Hillary Clinton: *otherworldly shriek of a guffaw*