Mistletoe

Mistletoe is a plant that is normally used for celebrating Christmas. It is usually customary that somebody standing under the mistletoe should be kissed, which can be interpreted as a sign of friendship, family love, or romantic love.

In the cartoon show episode "Baby's First Christmas", Chlorhydris used mistletoe to put Nicholas the toymaker under a spell that would change his cheery demeanor into a hateful spirit in the hopes that that would ruin Christmas. Soon after the spell was cast, the mistletoe shriveled up into ashes.

In the EMPATH: The Luckiest Smurf story "Empath And The Red-Nosed Reindeer", Empath was kissed under the mistletoe by Smurfette, which presumably she hung right over his door in the hopes that she would catch him off-guard for a romantic greeting on Christmas Eve morning.