Why Charles dingo head freeze?

It seems like you're asking about a phrase or a joke that I don't understand. There isn't a common phrase or saying that uses "Charles dingo head freeze." It sounds like it might be:

* A specific joke or inside joke: Maybe it's a joke amongst friends or a family meme that I'm not familiar with.

* A misunderstanding of words: Perhaps you heard something similar but the words were misheard.

* A made-up phrase: You might have just created a unique phrase!

Could you tell me more about what you mean by "Charles dingo head freeze"? I'd love to try to understand what you're referring to.