Can You Get Drunk By Drinking The Blood Of Someone Who's Drunk?

Vampires are supposedly vulnerable to a few human conditions when they drink our blood, namely the effects of drugs and alcohol coursing through the bloodstream, but can you really get drunk by drinking a drunk person’s blood?
Surely there are some vampires out there who claim they get drunk from feeding on barflies, but the line between LARPing and real life has blurred for these folks, because according to research by Randall Munroe, creator of xkcd, you can’t get drunk simply by slurping on some sot’s vein sauce.
Here's what Randall has to say on the topic:

You wouldn’t throw up because because of the alcohol; you’d just throw up because you’re drinking blood. If you somehow avoided vomiting, you would have ingested a total of 2 grams of ethanol, which is the amount you’d get from one shot glass full of beer.

So the next time your buddy from Clan Brujah claims he’s been hitting the sauce inside Sammy lay this reality hammer down on him and make him question his motives for vampirism.