Where does a tear come

They are always considered be of pain But do we not cry the water in emotion A joyful time of moment pleasure is felt Mucus oil or which three tears fall But wet thou eye's of significant relief Tear falls, washing your eyes even unfelt Wash and drain the pipe or overflow face Depending on which you share the moment Rather we cry or laughter to bring about A tear in the droplet peeling a onion Or you pinch the finger it seems to appear It's a lubricant to eye's drained on down To your nose it runs even with a cold A water of both pain and happiness Its only purpose, relief of anxiety Or the beauty we find in the world Cry your eyes out if you want to Where does a tear come, even while sleep There's no cutting it off, unless you got dry eye Shed a tear for me, it's a natural thing