Story time. When I was probably 15 or 16, my older cousin and I were sitting in my bedroom. My cousin is, and I mean this with all sincerity, batshit insane, Built like a brick shit house, and hands down the biggest bully I've ever known. He had just finished drinking a tall glass of milk when he looks to me and tells me to "check this out". He then proceeds to vomit into his empty glass, filling it to the top and going "look at it". I'm sitting on the bed looking at this and my gag reflex starts kicking in. I'm grossed out at this point, as I'm staring at this milky, pink, chunky glass that contained a mixture of the milk he just drank and whatever else was in his stomach. Then without hesitation, he starts drinking it back down, taking these long, nasty gulps. I'm begging him to just stop, nope, he slams the whole thing. Now I'm thinking this is over, he's done his dumbass parlor trick and we can move on with life, wrong. he does it again, and again slurps down the whole fucking glass. I'm suppressing my gag/vomit reflex as he does this probably 2 or three more times, I'm not sure, all I know is it was long enough for my gag reflex to go away.