My first BP struck the side of her tub once and it seriously looked like she broke her face. One side of her mouth (at the front corner) was all mushed in and it looked horrible! I was so scared!
Turns out...she'd just snagged herself on her own teeth. (Suck one side of your bottom lip into your mouth and bite down on it....kinda like that) It took a couple of hours for her to get it all sorted out, but afterward, she was completely fine.