<human>: Can you condense the text into a few key points?

so my two of my friends took my hat and started playing keep away with it. so i was thinking whatever just give me my hat back it was a gift from my late grandfather and is very special to me. so they keep going and eventually friend x pushed me, so i pushed back. and kicks me in the nuts twice and the stomach once. friend x now grabs me in a headlock from behind, so i naturally push against him trying to breath. he then tackles me to the ground so i lost it and IMHO over reacted. i punched him 3 times in the stomach and twice in the back of the head. so i got my hat back and all seemed fine since the two blows to the head were from my weak hand. so a bunch of my friends go outside with him and i wasnt informed of why so i walk out and friend Y who was one of the guys that took my hat grabs me and says i cant come out and i asked why and he said because you cant. so i sit down and listen to them talk for a while and it turns out he has a concussion/whiplash from me punching him so i feel absolutely shitty since friend x and i had been friends since 7th grade. but then as i was walking out the door to go home i heard my (former?) friends talking about what happend and saying everything is my fault and i feel so bad that not only did i give this guy a concussion but have lost a bunch of my really good friends
<bot>: friend took a cherished hat given to me by late grandpa, tackles me, i deliver two blows two his head, he gets concussion and my supposed friends turn on me for giving the guy a concussion