The chimney usually works quite well as an entrance for Santa. It allows easy access to the stockings, and it's a straight shoot from the roof. In and out.
Easy-Peasy!
That is until Santa realizes he's had too many cookies as he's climbing down Jack's chimney.
Uh oh, he can't move!
Will Santa be able to free himself... or will he be trapped this Christmas, leaving half the world's children without presents?