So. I've been on the receiving end of Unanticipated Bar Room Violenceā¢ after trying to give a good night kiss to a girl I'd dated previously, and having her jealous ex spot me from across the way. He followed me when I went, "OH! He's here? I'm out!," swung me around and punched me. There was a surprising amount of blood.
I sort of thought, drunkenly, "That's a fist! Comin' right at me!" while the swing was coming, and looked straight at it. Evidently this was a good call, though, because it meant that he hit a bit higher than intended, and my nose didn't end up broken. He got thrown out about as quickly as I could go, "oh shi--! I was supposed to do something, right?"
So, anyway.
In reality? If you're drunk, and they're drunk, and they're throwing a bottle, odds are it'll miss soundly. If it doesn't miss soundly, odds are if you see it coming you'll undercompensate and get a glancing blow, or overcompensate, trip on your barstool, and faceplant with a twisted ankle or something like that. But odds are they'll miss. And odds are you'll injure yourself trying to dodge something that missed. That's just how drunk reflexes are.
That said!
Let's say, y'know, Makoto is drunk at the Lounge or the Rook or whatnot and having some girl time talking about dancing or guffawing at the notion of dating any of those losers on the IGS. Someone throws something at her and it's not Random Hilarious Violenceā¢ of some sort, but instead a reasonable progression from arguments, disagreements, whatnot. Odds are I won't realize that she should injure herself failing to dodge an object that would've missed her anyway; odds are she'll get a glancing blow with customary superficial damage from glass, and GTFO-- heels crunching in glass shards, slipping a bit as walking in heels on glass while wearing a pleather pencil skirt while drunk is Olympic-level difficulty, to dodge behind the bar, and escape through the kitchen-- and drunk logic may require that the hungry escapee grab some potstickers on the way out.
Trust me. I'm a doctor.