Puhoy: Dream,or alternate universe?

This debate has been going on ever since, ya know, Monday. These episodes are getting more and more crazier. Personally, I think it was a dream, but we should make this official.


Alternate Universe Theory:
1) Finn's arm is replaced. In this episode, it appears to be a pillow.
2) We didn't physically see Finn fall asleep.
3) Alternate Universes have been to confirmed to exist  (Stated by Prismo, but he called it "Alternate Reality")

Dream Theory:
1) Many time skips. You can see Jake and BMO chilling in the pillow fort, while Finn married, had kids, visited an oracle, and grew old and died in a very short span of time
2) He was so quick to marry Rosalie, and his weird pillow kids are physically impossible.
3) He actually stated it was a dream.

So, decide for yourself. Dream, or Real?