The pointless amount of deccys to all go back up in the loft 3 weeks later.
People using the whole "Is die hard a Christmas film?" thing to show they're quirky and think outside the box.
Ladbaby and before that the inevitable X factor Christmas number 1.
The 'funny' twists on Elf on a shelf. Aki on baccy was one I saw yesterday. Hilarious.
The sheer amount of presents adults get each other. Most of which people neither want or need, it's just that people chase an imaginary acceptable spend amount and end up stressing out over what they can get etc. Often leads to people just exchanging £20 in a card.
That last one makes me look like a right scrooge. Just think the loads of presents part should be for kids. I'd happily go without presents and just make sure I see various mates for a drink or something some point over the weeks.