The entire bottle.
When I was 16 my mom bought me a 5th of everclear. I had a few friends over, no one could stand to drink it, When everyone was done the bottle was still 9/10 full. I smashed it straight. the entire bottle.
We took a ride to the gas station to get some food and shit. I dont remember why, but I remember I couldn't get the truck door open so my buddy that was drivin came around and was gonna open the door for me, next thing I know I'm layin on the ground next to the truck lookin up at the stars.
I went into the gas station, went to piss, dunno why I had my pants down, but I fell out of the bathroom with my pants around my ankles. Bought a cigar and some sodas, one of my buddys got a tub of ice cream and beef jerky.
Got home, layin on the couch watchin tv, the guy with ice cream is sittin on the love seat chowin down, Im smokin my cigar, bring my hand up to my mouth to take a hit off it, its gone. I look around for a minute confused then I smell something burning, a digusting melting smell, almost like plastic. Look down, the cigars on my chest burnin a hole in my skin. Didn't feel a fuckin thing.
Bit later, I puked hard, probably more than half of what I drank. Ice cream boy watched the whole thing, I looked at him, he looked at me, he kept eatin and returned watching tv. My dog took 1 lick and couldn't walk straight.
In all, one of the best nights of my life.