When you havent had anything to drink, but you're acting in a way that makes you look completely smashed. When a girl, typically named Ttephanie is completely sober, but is acting so ridiculous that her friends say she's Sober Drunk.
friend: Ttephanie, Why are you dancing on that table? You havent had anything to drink!
Ttephanie: I'm Sober Drunk!!
Ttephanie: I'm Sober Drunk!!
by Winnifer October 18, 2010