Why do we sing about Rudolph the Red-Nosed Reindeer? Was "Jingle Bells" originally a Thanksgiving song? Why have we never researched these things?!
In the midst of all the poster frenzy for the upcoming "The Fault In Our Stars" movie, John Green took to his Mental Floss channel to fill us in on some classic holiday traditions and just how they came to be. Stay tuned, pop culture fanatics, because - we won't give it away, but - Loki is involved!