<human>: i'll start: Me and some friends went out to a small local bar one night. We decided we had our fill of pool and beer for the night and decided to call it a night. The bar was so packed that night we decided to park a the 7 eleven across the street. So as we are waiting to cross, we noticed an obviously super intoxicated guy stumbling around in the middle of a the highway. Suddenly a green SUV trying to beat the light plowed right into this guy must of been doing at least 55. Stunned at what we'd just seen we of course quickly ran over to him to see if he was ok/alive. This guy gets up and tries to walk, at which point his left leg folded at the shin right underneath him and he toppled over. I guess it was the combination of shock and extreme inebriation but he seemed to be completely unaware of the fact that his leg was holding on by probably a 1/4 inch of flesh and was just flopping around. I sat with him as my friend called 911 and had a real tough time trying to get him to stay seated. Ready for the really fucked up part? Well he all of the sudden i guess notices his now destroyed lower leg and decides to try to tear it completely off! He started twisting and yanking on it so i literally had to hold this guy down until the ambulance and police arrived shortly after. I will never forget that leg.

Could you distill the essence of the text into 1-3 sentences?
<bot>: Saw a drunk guy get hit by a speeding suv, snapping his leg at the shin almost completely off, had to subdue him to keep him from trying to rip his leg the rest of the way off.