dream fragment

I am talking to a girl that I have been sleeping with. She is laying on a couch, with her head in my lap. She is telling me that she has had sex with one of my closest friends. I am not angry or surprised.

I am laying on a futon in a friends dorm room, and the tv is on, playing something I can't make out. the room is dark and the only light is coming from the hallway through the open door. The room is filled with people that I used to know from high school and other places.

I am walking behind a girl with brown hair, a little shorter than me and I am seeing myself in third person. I am wearing a mod-ish three peice suit, dark and pinstriped. It is made of the same material as a raincoat might be.
The girl asks what it is for and I say it is for radiation.
She asks from what.
I say from the culture. She asks if it works and I say no, not at all.