The twenty-something lead singer of alt. rock band The Strokes. Similtaneously hot and beautiful, passionate and apathathtic, Julian is a symbol of a generation of hipsters and people who know good music.
Man, that vintage shirt is sooo Julian Casablancas on you.
A fusion of two words: Sarcastic and Bastard. Many bastards are sarcastic and vice versa. Hence this great word which I made up and should have patented, though it will most likely never catch on with the masses.