I floss in the bathroom.
My roommate flosses in front of her computer while she's watching a TV show, then puts her used floss on the plate she just ate from, blows her nose with her napkin, continues to pick at her teeth and continues to watch her show.

While giggling to herself.

I have never wanted to visit my parents more than I do right now.  Soon, soon I will be away from her for a couple of weeks.  I just have to keep repeating that to myself.  I can do this.