Yes, I’ll explain this Catalan Christmas tradition every year
The Tió de Nadal is a pre-Christian tradition that basically consists on a log that poops presents for children on Christmas. The log has a face drawn, wears a barretina (the traditional Catalan hat), and is covered by a blanket so that he doesn’t get cold.
We place him in a visible place, such as the living room (if it’s close to a fireplace better), at the beginning of December, and children leave food (usually fruit peels, nuts…) to feed him.
Then, on Christmas Day (or, for some families, Christmas Eve), children hit him with long sticks while singing a song that asks him to give them presents. At the end of the song, the blanket is removed, and it reveals all the presents that were hidden under it, representing that he “pooped” them.
And it doesn’t seem weird to us until we have to explain it to a foreigner.