1 A member of a bloodline possessing an eye technique called the Sharingan
2 A Guy that is so cool Girls fall just seeing him
Sasuke is an Uchiha
Of course she is falling for me, I am an Uchiha
Somebody who loathes their family and/or a member of their family so much that they want to kill their whole family/member of their family. This is a reference to the Uchiha clan from the anime/manga Naruto. This person may also be considered suicidal or emo.
Person 1: Hey, wanna play Bioshock or Call of Duty 4?
Person 2: ...No.
Person 1: Okay, wanna watch me play Bioshock or Call of Duty 4?
Person 2: No, I'm gonna beat up my baby brother and cut myself.
(Person 2 walks away)
Person 1: He turned down Bioshock for masochism and fratricide? What an Uchiha.