Oscar George Bluth is the twin brother of George Sr.  Oscar is notably different due to his large mane of hair he's been able to maintain thanks to his stress-free, stoner lifestyle unlike his brother.  Oscar has been known to been having an affair with Lucille.

Oscar Bluth Quotes

Lucille: I want you out of the house.
Oscar: Oh, I want you everywhere.

Oscar: Ok, but I never meant to break up your family. Your mom called me for a reason. I-I don't think she's happy.
Buster: No, she's happy. She's just mean all the time.

Arrested Development Quotes

Gob: Take off your glasses. Oh ... Wait, wait. Let down your hair. No, glasses on, hair back up. Let's just get that hair right back up.
Kitty: Let me turn the lights off.
Gob: Yes, yes, please.
Kitty: How's that? Is that better?
Gob: It just seems like there's still light coming in from under the door.

Lucille: I'll have the Ike and Tina tuna.
Waitress: Plate or platter?
Lucille: I don't understand the question, and I won't respond to it.