Some years ago the term 'Twinkie Defense' was coined by newspaper reporters, to ironically describe the defense attorneys attempt to explain the motivation of the perpetrator of a horrible multiple murder, with the theory that the killer suffered from diminished mental capacity, leading to psychotic depression, all of which had been triggered by a change in his diet when he began eating highly-sugared junk food, aka 'Twinkies'.
A much less dark - and Holiday-themed saying - whose origins I'm uncertain of - is '
the Elf made me do it'. I think whoever was decorating this particular shopwindow, in a small Oregon town, was trying to convey just that: a sense of Christmas humor. But the I-might-really-be-an-Alien-masquerading-as-a-human-being expression on the face of the child mannequin in the same shopwindow - adds wonderfully dark and twisted subtexts to the window--
Or, at least, that's how I saw it.