Also from Uninvited guest: "I'm your fifteen stone first-footer".

First-footer is a Scottish term relating to the New Year (Hogmanay). A
first-footer is a person who is the first person to enter your house on
January 1st. That persons would be about 15 stone (which is 15 * 14 = 210
pounds). When this person comes into your house, you must give him all the
food he/she wants!  In other words, after The Bells (midnight on 31
December) you have to ensure that your "first footer" is a tall person who
should be carrying a small lump of coal, which would traditionally go onto
your fire (remember it's cold and dark at New Year in Scotland!).  The
early hours of 1 January are traditionally spent going from house to house
in your neighbourhood visiting people and welcoming in the New Year
(drinking!).