Hug

A hug is a form of interpersonal expression between two people that is native among many human and humanoid cultures. It is used to express various forms of love, whether it would be familial love, mutual friendship, or deep romantic love. This form of expression is also native to the Smurfs in mainstream media, as an entire holiday called Hug-A-Smurf Day was made for the occasion of expressing feelings through hugs.

Empath: The Luckiest Smurf stories
In the EMPATH: The Luckiest Smurf story series, the main character Empath originally saw hugging as a scandalous form of expression among the Smurfs due to the Psychelian belief of all forms of direct physical expression being taboo, and thus refused to have any Smurf even touch him. It took an incident involving Papa Smurf being mortally injured during a hiking trip with Empath during his second visit to the Smurf Village for the young Smurf to be comfortable with the idea of being touched harmlessly by his fellow Smurfs or by Papa Smurf himself.

While most Smurfs have no problems with being hugged, Grouchy was one Smurf who didn't like being hugged, and on Hug-A-Smurf Day constantly avoided any attempts by his fellow Smurfs to ambush him with a hug. From an incident on a Hug-A-Smurf Day when Grouchy was ambushed with a hug during a Hug-A-Smurf Day that Tapper's Tavern was designated a "No Hug Zone" by Tapper, Papa Smurf set up a new rule for the day that all hugs must be consensual.