Doesn't it? That's where the wrinkles on your knuckles come from. Your skin forms wrinkles where it creases often.

As opposed to...? There's a reason you hear about "smile lines" and the like.

That, Satan, or masturbation. No one is really certain which.

Yes. Like people who always make pouty lips when they smoke get wrinkles around their mouth very quickly aka smoker’s lines. It’s from repeated motion. Those wrinkles non-smokers get much later in life. I know thirty year old smokers who start to get those lines already.

They always said not to make that face or you'd get stuck like that.