Sham: (Noun) A person who pretends to be someone or something they are not.

Aww, how cute. Paris Hilton went out for a painfully obvious photo op shopping yesterday with her newly reality show-appointed BFF Brittany Flickinger, acting like Brittany isn't contractually obligated against making direct eye contact or standing a minimum of 15 feet from her as soon as those cameras go away. Although, in many schools of thought, those things could actually be seen as the "perks" of being BFF with Paris Hilton.