["I was really annoyed today.  I walked outside to get something from my car and a friend was just hanging out in my driveway with some people I didn't even know."]
This is how you deal with such people,put him off. Reprimand such bad behaviors.
I was really annoyed today. I walked outside to get something from my car and a friend was just hanging out in my driveway with some people I didn't even know.