Someone highly desirable

The anonymous, mysterious person who has done it, has it and seen it all.

The daughter or son of your uncles and aunts.

Cousin or cuz is used to describe a close friend or can be a reasonable substitute for a name that is unknown; Is also used as a greeting by members of the California based Crip gang.

Invariably, everyone has at least one cousin who has been in juvenile hall, is a slut, or lives in the ghetto. Even if you are the richest person in the world.

Your best friend. The one you call for all your problems. The one you can tell anything and absolutely everything to. Your bestie? She's more than that. She's your sister. She's the only one who will tell you your fat, or ugly, or smell bad. She's the only one who will tell you your boyfriends a jackass. She'll beat the crap out of anyone hating on you and you'll do the same for her. She's more than just family. She's your fucking life.

On an episode of COPS;
The person to which a stolen car,
a bag of weed, or
a crackpipe, belongs to.