He wants to drink water and, fully believing that it is being poured into his mouth, he pours the water next to his mouth.
This should result in a clear image of a man, perhaps thirsty and somewhat distracted, grasping a clear glass full of water. The water, rather than pouring neatly into his mouth, is being spilled onto his neck or chest due to a misguided action. His eyes might be closed in anticipation of the drink, so he doesn't immediately notice the mistake. The
