You want some technical explanations. Here you go. Have you ever noticed yourself crying minimally, your eye full of tears but nothing drips down your face. Of course, you have. That tear unless it's excess flows into two tubes around the nose side of the eye(Don't flash the lights to see them on your siblings, cause they are too tiny to be seen). Then through a chain of different tubes(punctum-caniliculi-sac-nasolacrimal duct-inferior nasal turbinate) enters the nose. Your nose absorbs 90% of that. The rest goes to the back of your mouse then swallowed(So, this 10% is what you tasted, isn't it? ) or flows out of your nose into outside only if it's excess.