scary experience

It was when I was 12 years old.
I played in the yard with my class members doing "keidoro".
I ran away from my frind because I did a role of thief.
At the time, something happend and my friend's front teeth was stuck into my head!
Although I felt strong pain, I thought it was not so serious.
Then I touched my head and found it spilled much blood!
I rushed to a school  infirmary and went to a hospital.
A doctor didn't suture my wound but he stapled it!
The pain of stapling was very short but very strong, so I shouted.
I don't want to experience things like this never!