morphing dwarves 

When someone goes through emotions so quickly, you don't know where you stand. eg happy, grumpy, dopey etc.

Watch out. She's morphing dwarves again.

morphing dwarves by weaseltowers December 27, 2007

Morphing dwarves 

When someone does from emotion to emotion very quickly. Referring to the 7 dwarves.

Dam you were sleepy. Now your happy. Your gonna be grumpy later. Then dopey. You morphing dwarves!

Morphing dwarves by Nellpabz November 24, 2018