What filters can I apply to the world when I'm bored standing in a line?

The creator of xkcd plans fight scenes. An old classmate imagined everyone (EVERYONE) naked. I sometimes give people backstories. What do you do? (Reblog this or comment.) — nickdouglas

 I don’t do anything like that, but I always make sure to scan the faces (quickly, but very deliberately)  of everyone in each new environment I enter. I usually look for any distinguishing / interesting features, but usually just get a confirmation of how boring most people look.