It wasn't this year, but a few years ago, I had a disastrous Christmas Day.
We'd told the boys, who were then about 10, 8 and 6, that they could come in and wake us up at 7.30am, and not a moment earlier, and then we'd go downstairs to see if Father Christmas had been (we leave stockings in the front room). Sure enough, at 7.30am on the dot, in troop the ds's, and ds1 says, "Good morning mummy, good morning daddy and a merry christmas to you both - oh, and I've been sick three times!!!" Poor lamb hadn't realised that this would have counted as a jolly good reason to wake us early!
Anyhow - he'd clearly got some sort of a tummy bug, and spent the rest of the day feeling poorly, being sick, having a nap and then wanting to try eating something and being sick again. Dh took the younger two to church and left me at home caring for ds1 and looking after the preparations for christmas dinner, which we were going to have at 6pm that year.
By the time dh and the boys got back from church, dh was starting to feel a bit off too, but soldiered on through the day. Ds1 revived for long enough to open his presents, then fell asleep again.
What with caring for a poorly boy and cooking roast goose with all the trimmings, I didn't keep a very good eye on ds2 and ds3, who spent all day mainlining chocolate, and by the time I served supper, they were full to the gunnels and couldn't eat anything, dh was feeling delicate in the tummy because of the impending bug, so heroically tasted his dinner but couldn't eat it, so I was the only one who ate Christmas dinner that year.
I said at the time that I could have saved myself all that work and just had a Goose McNugget meal instead!!!