Pet Phrase.

It seems that after a friend of mine notices about this characteristic of mine and told me my pet phrase always seems to be this: "Who cares?" "I don't care what you think about me" and she said this is my most famous phrase that i use often "Really?" and "Suit Yourself". Really? Is that my most famous phrase? Sure i used it once or twice but not often. Who cares? Gosh IT IS MY PET PHRASE! I HAVE JUST USED IT!