Whenever I read a book and the author describes some human idiosyncrasy (ie yawning with your mouth closed to seem like you're not yawning, causing your nostrils to flare), I have a habit of mimicking whatever is described. Like, i'll think, "yeah, i've done that..." and then I do it, like I don't believe myself, so I figure I should show myself that I do indeed actually do it.

The point i'm trying to make is that most people have nostrils. OBVIOUSLY.