Derived from the word Giga Chad. Refers to a superior being with combat skills unrivalled.
I just went full gigga on that dude
giga chads that made vak shut down summer 2013 lets goooooo
"damn them RFST5 goons deadass have no life"
The opposite of a Gigga. Inferior in combat in all ways. Cowardly, and often seen hiding away
Awww man this dude is such a gigger