Tear off a small section of paper towel.
Dip it in your water glass. Do this discretely, so no one will notice.
Ball the wet paper towel up and hide it on your thigh.
Wait for the best moment to do your trick, hopefully before your pants leg is soaked and you have no water left to do the trick.
Hide the wet paper towel ball between your ring and middle finger.
Lift your spoon, with the bowl facing the audience.
Squeeze the paper towel against the back of the spoon's handle so the water runs down the handle and drips off the bowel. "Magically" your spoon transforms into a crying spoon.
Make sure that when you do the crying spoon trick, your spoon tilts a little so the drops are visible, and they land on your plate.
Practice the crying spoon trick a few times in front of the mirror so you can judge the best angle at which to hold your spoon so it looks like it's crying.