Crying

Crying (also called weeping) is an expression that usually involves the production of tears from one's eyes. It is normally used to express sadness when something or someone hurts the person crying. Occasionally, though, crying can be used to express unbridled happiness. In mainstream Smurfs media, the Smurf character Weepy is commonly associated with this emotion.

Empath: The Luckiest Smurf stories
In the EMPATH: The Luckiest Smurf story series, crying is an emotion that most creatures and living beings except for Psyches engage in, due to their particular belief about emotions being the enemy to logic and reason. Empath, having all memories of his emotions as a Smurf erased by the Psyche Master, experienced crying when he had his first flash memory of being sent away to Psychelia as an infant, though neither Empath nor Papa Smurf at the time knew exactly what caused it. It was from this experience that Empath sought to learn about all the emotions that the Smurfs express and to learn how to control them.