[His reaction certainly makes it seem as though he's taking it literally, and Balthier raises a brow.]

Ah— it's an expression. Generally, it means if you've had too much to drink, a bit of alcohol will help you get past the worst of it.

[As for the rest, he narrows his gaze.]

I can't say I condone piloting while intoxicated. The slightest error is all it takes to send a ship down— and everyone in it, no matter how good you are.