Vincent/Jerome: There's more vodka in this piss, than there is piss!
In fact, not just the quote above but the entire scene it comes from. It's just before Vincent/Jerome's interview; he needs a urine sample that doesn't have alcohol in it, and given Eugene's drinking problem that's tricky. The following never fails to make this troper laugh.
Vincent/Jerome: (after testing that day's sample) Oh for Christ's sake, Eugene, it's eight o'clock in the morning!