Christmas poppers, figgy pudding and mince pies? They're some of the most common Christmas traditions across the pond, but thos words make almost no sense to practically any American. Fortunately for those hoping to get a better idea of what the Brits are doing for Christmas, Mental Floss has collected a whole list of traditions in England that make no sense to those living elsewhere. If you watch Doctor Who or other BBC shows with a Christmas special, it's a great way to understand what the heck they're up to.
So check out the full list (including what Boxing Day is) over at Mental Floss.