You are putting the cart before the horse here. It should be your parents that you sit down and discuss this problem with. Tell them you would like them to meet some of your friends (don't expect your parents to let you have a houseful of young people in their home unless one of your parents is home) and more than likely your parents will figure out ways you can have some friends over. Most parents are happy to meet their children's friends if only to see what type of a group they are hanging out with.
depends if your parents know your friends parents and if they think its safe to stay at that's friends house.
friends siblings teacher grandparent aunt/uncle
People other than himself.
can be family or friends
It is rude for parents to invite themselves over to your friends parents home without an invitation. There is no reason you can't enjoy time with your friend without your parents being there and the only time one of your parents should come to your friends home is to pick you up to bring you home. However, it is up to your friends parents to say something since they find it annoying.
go live with your parents closest friends
it depends if she is naturally more mature for her age than her other friends (girls) which if she is i blame on the parents
You should be allowed to sit with them for a certain amount of time. They probably want to have some "adult" time without kids. That's no reflection on you. Parents care about their children a lot, but also need their space. If you, the offspring of your parents have reached adulthood and your parents have recognized you as such, then yes it is okay for you to take offense. Approach them about this at a later time when their guests are gone and they seem approachable to this subject. However keep in mind that if you are eating at your parents house, then it is ultimately up to them to decide the seating arrangements for everyone. Second these are their friends, so it ultimately maybe they wanted to spend time with their friends, but wanted to remove you so the could be with friends rather than parents with friends over.
Mr. and Mrs. _______ (surname of the parents)
you say parents are going with
kiss their boyfriend/girlfriend make their parents or guardians like you more, wear better clothes than them, make friends with all of their friends and make their friends like you more, whatever they do make sure you do it better.