I still make faces at little kids today...and every time I stop, my face goes back to normal. I know plenty of people who do the same. Some folk look like they're makin a funny face all the time and the faces they made as a child have nothing to do with it...visual repugnance comes naturally. I bet some people wish if they made a straight face all the time, their mug would go to normal (no, not "back to normal"...you can't go back to where you've never been)...but that ain't the way it works. So that only means one thing, kids: that whole thing is just another...lie they tell the chirrens.
Lies They Tell the Chirrens- Facing the Truth
When I was little (well, when I was young) they always used to tell me that if I made ugly faces, eventually they would stay like that. See, you can get confused because some people walk around with fucked up faces all the time (maybe you're one of em...if so, sry...), but the thing is they can still move them...if folks faces were staying like that because they made faces as a child, it would be the same fucked up face 24/7, like those 'laugh now/cry later' masks. However, the unfortunate lookin people I see can make weird looking smiles and frowns and every other facial expression...so they probably were odd looking from birth.