Cousin

Someone who always gets on your nevers, in your beeswax and likes to get the fair share in everything.

OR

Someone you can always trust and is not a snitch. Can be hella lit sometimes.

First example: Bro, I was trying to go to this hella lit Halloween party but my dumb ass cousin had to tag along.

Second: He's coming to the party with me Stacey not you he is my cousin.