jane's dad caused laughing mayhem by saying the christmas cake had icing and christmas 'knickerations'.  he probably didn't actually say that, but jane repeated it and tears of laughter ensured.

when we finally saw it, we were very impressed by the kickerations, although there was some tree subsidance

kezia reset them like some cosmic anti-lumberjack

it did look (and taste very good)

so that's the story of the christmas cake and knickerations.