Pete got a magazine in the mail a while back with a wide selection of men's work clothes. He was quick to point out that almost every model had a smudge on his cheekbone, which is highly unrealistic.
Take this picture for example. The guy looks like some kind of contractor. He's holding an electronic device, blueprints perhaps and wearing fairly clean clothes. But then ... a somewhat round smudge on his cheek. Why?
Or this picture. Pete said it looks like he's holding a tripod so he's probably a surveyor or something. But look, the same kind of smudge. Where would that come from?
Here's one of my favorites. (First, I'd like to say that I've never seen a worker in that pose with that look on his face.) So here you have a flashlight on one side and a level on the other. And here it comes ... the smudge. From what?
And finally, an electrician (I think) with a peculiar rub of dirt on his jawbone. I guess screwing in a fixture is pretty dirty work. ...
I would also pick on the girly magazines like Victoria's Secret models with pouty lips, that distant look in their eyes, windblown hair and a pair of heels to go with their matching unmentionables, ... but I won't subject you to those pictures. :)