Do you have a headcanon that you accept as fact?

Mine is that the big blue alien and the hormone monster are both nigh-omnipotent cosmic entities who are at war and use children as their pawns.

The blue alien stands for the natural order while the hm stands for chaos. They both take multiple forms but are still single entities

Ba forms- Duke, Nick's pubes, Jesse's hoo ha, etc

HM forms- every hormone monster, Jay's furniture, and more

That's the surface level of all of it. But it goes in depth with all the other creatures and entities on the show too.....I was very high when I came up with all of this..