Someone who is Ziggy is a colleague with an impulsively explosive (or 'Zig-Zag') personality in a
work space that can't
help make you feel on edge and anxious, one day they'll be fine and
friendly or you'll even be having a laugh with them, on another day they'll be giving you the hardest time on a matter which can only be defined as exaggerated.
Example of someone who is being Ziggy:
'Haha
today has been such a good day, you and me make the dream
work right here'.
'Why the fuck haven't you sort this
thing out hey? I couldn't care less what else you have going on this is out of order so sort it now'