Faraday is smirking at him as he sets down the bottle, mostly to hide the shaking in his hand. Pulling off the scrub shit, wanting to put on something he knows he'll be more comfortable in. He's quiet a minute, thinking about that when he talks about only have two bottles.

"You might want to take that back then." He shifts, looking away and then looking back at Vasquez. "I haven't had a drink since I got here. I... You know how long before that I went without a drink?" Because he can't remember. A few hours? Maybe. That's it. Overnight because he's asleep? "I start now, I'm not giving that back."

Which might explain how much of an asshole he's being, though it is perhaps the nicest thing he's done in warning Vasquez before he drinks it all.