Put in your headphones... =.=
 

My roommate has terrible taste in music... :/

Wish he would just put in his headphones. The other day, both of us were in the living room and I was watching some videos pretty quietly bc my headphones weren't around and he just kept turning his volume up and up. Even after I finished watching, he still kept it that loud. I was going to obnoxious and turn my volume up too but then I just got annoyed and went into the room.

And the reason you couldn't say "Keep it down, I'm trying to study!" is...?

Because I'm not trying to study. I just like a reasonable quiet.

Nicely ask him if he can turn it down or put in headphones?

... like my sister? She was on a "How I Met Your Mother" marathon for a while and although it is funny... I don't want to hear... =/

Though her suddenly breaking the silence with lol is scary too.