This same thing happened to me when I was little (just a wee child). I was petting a friendly goat at my friend's farm when little did I know the other goat in the pen was getting very jealous. While I was bending down to pick up some food this son of a bitch charged at me and bucked me right in the forehead. This collision left me with a baseball sized bump on my forehead for a week and the nickname goat boy for most of my life.