My nephew was hit by a car. He’s okay, thankfully. Like a crumple zone, his sinus cavities collapsed and absorbed the worst of the impact. 

Before the reconstructive surgery to reopen the sinus, the doctor mentioned there might be some scarring. Then, with a straight face, the doctor turned to my brother-in-law and said, "If he had forehead wrinkles like you, we could have gone in though one to hide the scar." You can imagine my brother-in-law’s reaction.