Crossover - Big Mouth Hotel

I miss 10 seconds ago when I was blissfully unaware of the existence of this monstrosity.

This is so cursed, I got indigestion, stomach cramps, sudden mass pain in all my teeth, and a major migraine.
I now have a strong urge to find whoever made this, rant at them for a bit, smash up their computer with a baseball bat, then stare at them angrily before leaving, all for the fact they brought this abomination upon the world.