Okay so Vrenille does not make a rude gesture at her, but it's a close thing. He's tempted, but he's got bigger fish to fry like trying to get his limbs to all cooperate. He does cast her a bit of an Oh har-har, bet you ain't such hot shit-style sneer.

Thanks very much but he's pretty damn good at holding his booze. He's had a lot of practice and generally he needs to be approximately sober even a few drinks in. Too many years in a line of bar work where impaired judgment would be a major liability and all that. Anyway, she's not to know.

The point is (and if he could tell her this he would, counting it off on potentially the wrong number of fingers): 1. that this stuff is a lot stronger than it ought to be, 2. that he's completely fine and he's going to get her that damn glass from that damn juice shop over there just to prove the point, and 3. wow, did he mention that this stuff is really a lot stronger than it ought to be?

What actually end up happening is that he shakes a rather unsteady forefinger at her, then fixes his gaze on the Jamba Juice counter, and does an...adequate impression of a sober person walking towards it. Chalk it up to sheer stubbornness.