When the song deck the halls is playing scream at the top of your lunges DECK THE HALLS WITH JEFFS VICTOMS FALLALALALLALALA!!!!

Decorate the tree with creepypasta ornaments (I actually did that, my mom was so pissed)

Act insane

Make slender man references

Tell the younger kids if they aren't grateful for their video games BEN drowned dark link glitchy red and lost silver will pull them into the tv and leave them there

Tell everybody if they aren't grateful you'll call dr. Smiley to fix you

If some asks you to paint them a holiday picture ask them if you can use their blood to paint with

Make as many creepypasta references as you can

Or sing Christmas in Hollywood by Hollywood undead.