Seasonal joke

There's a cruel joke going around this time of year. It seems that no greeting, no matter how casual can be passed without this joke being repeated. It goes along the lines of "Ready for Christmas then?"
I think we will be, around 5.47 am Boxing Day.
Meantime while buying even more food on the oh my God we are going to starve as the shops shut for 24 hours I spotted another joke. The supermarket is stocking Easter eggs.