Quotes / Sibling Rivalry

Dan: Ever since we were kids, my mom always made me walk Johnny to school first day every year, and every year, I'd walk him to the wrong school. Hehe! —Just 'cause.
Dr. Cox: Boy, that's a great story, really. And I'm sure you're just a horrible big brother.
Dan: [smiles in mock humility] Well...
Scrubs, "my Brother, Where Art Thou?"

Even she, when she was with her sharpest tongue, had called him Loki Cowardson more often than not, drawing a chuckle from Fandral and a bemused head shake from Volstagg each time she had done so. Thor often told her to save her bite for the battlefield in such moments - for he was always as quick to shield his brother as he was to jab his own taunts. But, such was the way of siblings.
Narration, "Steel in Your Hand, a Thor fanfic

Dante: (While pointing his gun at Virgil) I guess this is what they call a heartfelt family reunion.
Vergil: (Partly draws his katana) You got that right!

Mycroft: You’ve met him. How many friends do you imagine he has? I am the closest thing to a friend that Sherlock Holmes is capable of having.
John: And what’s that?
Mycroft: An enemy.
John: An enemy?
Mycroft: In his mind certainly. If you were to ask him he’d probably say his archenemy. He does love to be dramatic.
Hexadecimal: Me and Megabyte come from the same viral strain.
Bob: The same family?!?
Hexadecimal: Oh it's much worse than that I'm afraid. He's my brother hahahahaha!
Bob: But you're always trying to destroy each other.
Hexadecimal: Oh that's just sibling rivalry.

Thor: [Mother] wouldn't want us to fight.
Loki: ...Well, she wouldn't exactly be shocked.