I hate it so much. I can't stand standing in the bathroom in front of a mirror and fiddle with my teeth. That whole experience is just wholy depressing, and then the foul taste on top of that. I try to at least brush and use mouthwash when I wake up and am groggy enough to not mind that much.
It's not the mirror (for me at least), it's the whole room, and the feeling of messing with the teeth, the scraping in the ears when brushing, all that.
Sometimes I put on earphones with an audioshow or something, which makes some aspects slightly more tolerable, but others even worse.
I mean I couldn't do that either, not for very long at least. I have the tendency to walk around aimlessly when doing something like that (same when I'm on the phone), which means I have to clean the floor after. So mostly I either brush my theeth in the shower or I sit down/lie down.
Damn, I just noticed that my theeth brushing habits are probably very weird, bit hey, at least that way I do it 2 - 3 times a day.