Replying to How do i politely kick people out of my dorm room?

i am studying for a big exam and my suite mate and his girlfriend come in, uninvited and it is really pissing me off. i was chillin with my girl friend. she was helping my room mates girl friend with a paper, and i was listening to a ski video and studying sociology for a exam tomorrow(i use ski vids as background noise). then my suite mate and his gf walk in, turn off my tv, and start talking loudly. i have my ipod on right now, but it is still pissing me off and not letting me study