When you are extremely happy or at a loss for words.

As spoken by Renee Zellweger's slutty character Gina in Empire Records, crazy like means overly hyper and active.

Implys the opposite. The individual refered to is not crazy at all, rather cunning (like a fox). Used when one appears to be 'crazy', but is acting with a hidden motive, in a cunning way

Shot out
Acting up for no reason
Being silly

Crazy like Hayley Jane (popular singer/songwriter), specifically in a very creative sense and/or fickle with relationships.

an individual whose actions are unpredictable; they can be cunning (or at least like to think that they are) and a bit sneaky. Not to be confused with batshit crazy, though ingestion of alcohol and other narcotic substances can lead to the "fox" in question to lose the ability to disguise their craziness and indeed become a crazy freaking maniac

A 178 chapter long Frerard (not yet completed) story on theblackparade.net that is the longest story on the site. It's written by Nukyster and features a mentally instable adaptation of Gerard Way and his suicidal 16 year old boyfriend, an adaptation of Frank Iero.