So I roughhouse with my 3 year old son, and he has a habit of getting really aggressive and swinging his head backwards quickly in a reverse-headbutt move. He's caught me several times in the jaw, which hurts like hell. Last night, he was bouncing around the couch and as I went to grab him, he flung his body and head backwards, headbutting me in the throat with the back of his head, at full speed. It felt like a legitimate throat-punch. I was coughing and gagging and it hurt to swallow. I'm sure it's a little swollen - it's a bit better this morning, about 12 hours after it happened.
Just another reminder that I'm 40 and as athletic and fit that I am, I can still be caught off guard. Advil has become my best friend this year.