Annoyingly annoying !

I hate people who are very annoying !, like just because you reached 30 ..doesn't mean you have to act like a bitchy adult . I have a friend who has two sisters and one brother, her brother is the youngest and the cutest , her sisters are so snobby and annoying , the one who is younger than her acts older than her and she's not even 20 and the other one is 30 , and they are so similiar , and she has the middle child syndrum .The 30 year old is like a snake acting all good , but she' s like a bad child doing bad things on purpose, besides being a gemini , and only caring about herself . The one under 20 is the same , selfcentered and agressive and cares about herself .They don't have a nice personality , the three of them , except the youngest brother whose 12 ...and very cute ! .