You were playing alone in a soccer field when a rogue ball came out of nowhere and hit you right in the back of your head. All you remembered before you saw black was the blow to your head and a boy yelling 'shit'.

You layed on the grass face down and heard running footsteps approaching you, when a strong arm lifted up your head and tried to wake you up. Your nose was bleeding slightly and you were drooling, you were knocked out cold.