"Lick the roof of your mouth," she said.

He took too big of a sip - too big of a sip too quickly. The third factor leading to his gulp that swallowed him is that he doesn't often drink these and they're strong. Extreme. They are the type of refreshment only voracious individuals indulge in. And indulging in such risky liquid takes courage. Just a sip is like a quick dip into the low end; a straw suck is much different. When thirsty, when craving for the all-consuming swirl of its intoxicants, it is near impossible for such a man, a man with such curiosity, such passion, to not take much too much on the initial sip.