What does que la cabeza se means?

"Que la cabeza se" by itself doesn't make much sense. It's incomplete.

You need to know the full sentence or phrase to understand what it means.

For example:

* Que la cabeza se vuele means "Let your head explode" or "Go crazy!"

* Que la cabeza se llene de ideas means "May your head be filled with ideas."

* Que la cabeza se caliente means "Get angry" or "Lose your temper."

Please provide the entire sentence or phrase you're interested in, and I'll be able to give you a more accurate translation.