To be hystatic means to be so overjoyed, that you have now become a combination of the words hysterical and ecstatic. When the Jersey Shore producers asked Deena to define it, she replies: "Hystatic is, you know, when you're like super happy, and like, really happy."
When a person administers a distraction in the course of conversation that enables them to inadvertently take ones lighter (or pen) for momentary use but doesn't return it.
I must have been hestatized as I don't usuallylose my pen, but it is missing.