YMMV / Adventure Time S 8 E 23 Skyhooks II

• Genius Bonus: Lumps being the fifth element that connects the world isn't just an Adventure Time-ism. Atoms are usually represented as spherical in shape, and groups of them resemble bumpy lumps, similar to the Lumpy Space People.
• Jossed: This episode debunks a long-standing theory that Flame Princess is actually a human who was kidnapped from her family as an infant by Flame King and turned into a Fire Elemental by the gem on her forehead, as she was still a Fire Elemental without the gem.