Weird skin fold under the chin?

[Alexandra V]

Yeah, I know about that, but the OP said a fold of skin...

OP are you talking about this:

http://www.flickr.com/photos/believethelie/3797449341/

It looks like a little slit

All BP's have that fold of skin, allows for jaw expansion

No, I knew about that one. It's like a little bit of skin that kind of hangs down. You know how people pinch the skin on your hand to tell if you're hydrated? And the skin goes down slowly if you're not. It kind of looks like someone pinched the skin on his chin and it never went down...