That time of year when you just can't be arsed to do anything or can't be arsed to bother with Christmas. It's about the same time all the shops cash in off December 25th by starting their X-Mas sales in Mid July and which don't end until the end of February.
Enid: Cyril, are you going to put up the decorations? It's only four days until the birthday of our Lord?
Cyril: I can't be Christmarsed.
Enid: Oh go on, I'll let you fondle my new hip?
Cyril: Fuck off you slag.I should've married your sister. At least she swallowed.