I recently got into a fight a couple days ago, and I was more mad than usual. It was at a party my friend's little sister was having and some guy that had disrespected her about 3 weeks ago over the internet showed up. And when I saw him, I grabbed him by the throat and threw him outside the house. All I remember was yelling, "I'm gunna fu*king kill you bit*h!" And I didn't even know what happened, its like I skipped scenes in a movie. The dude was on the ground crying and bleeding and people around were like "oh shi*" I didn't drink and I wasn't on drugs. This only happened once before when two guys were bullying my best-friend at school. I was 16 at the time and now I'm 18 if age has any relevance. But something that especially bothered me was that I wasn't the one who stopped the fight, it took 2 guys twice as big as me to keep from REALLY killing that dude. Is this normal? Do I need like a psychiatrist or something for this?