Dumbledore: "I use the Pensieve. One simply siphons the excess thoughts from one's mind, pours them into the basin, and examines them at one's leisure. It becomes easier to spot patterns and links, you understand, when they are in this form."
Therefore, this is my misguided attempt at trying to understand the workings of a loony-moony mind.
Moony: to be in a dreamy or listless state.
Loony: to be completely bat-shit crazy.