The velocity of the exiting fluid through the narrow funnel produced a fine mist, which instantly set upon in the direction Cassefin had been facing; which was, unfortunately, directly into Kokuten's face.
However, the Captain's mouth wasn't near as fast enough as his entire face was soaked in a mixture of saliva and alcohol. He could taste a dulled sensation of alcohol on his tongue, and he could feel the back of his throat burn.
In Yamatai(Japan), especially in high-school settings, this is considered an indirect kiss.