What makes the difference on how you are introduced to you boyfriend friends?

Could you give us some more details,please?

If you're focusing intently on the words your BF is using to introduce you to his mates, then:

1) Your relationship as a whole isn't nearly as serious as you think it is
2) Your practicing being mad at each other over things you could just as easily choose NOT be mad about
3) Potentially going to make each other miserable (always true when it comes to making others behave differently to our specifications.)

I'd hope you would provide more information, but if you're worrying about this, it's appears this relationship isn't rock solid

Your post is not quite clear.
Are you talking about when you are first introduced?

If so, simply don't worry about it. Just be yourself and don't worry about first impressions with them.

If his friends are good friends to him, they will simply support you and him, and whatever his feelings are.