Sprig of mistletoe
A sprig of mistletoe is a seasonal item. Mistletoe appears in players' inventory upon logging in in the time leading up to Christmas, with this message:
You feel happy and cheerful as a sprig of mistletoe mysteriously appears in your hands.
It looks like this:
The sprig of mistletoe is just that. A few leaves of mistletoe on a branch just waiting for you to use on someone you like. Maybe if you dangle it over the person you like, you might get a Hogswatch kiss.
You can "dangle <object> over <living>" with it, resulting in this:
You dangle the sprig of mistletoe over <living> and pucker up for a kiss.
It is poisonous to consume.
The effect from eating one sprig seems to be limited to the ritual penalty of being poisoned.