Gigadumb is essentially being dumb but on a bigger scale(or some would say, gigantic)
Person 1: Hey! Check it, Jerry just crashed the United States of America economy!
Person 2: That's pretty fucking Gigadumb
Funkle is a word to express sheer agony and pain through a word, it can be used either fully or parts of said word.
Such as, Barbunkle, Garfunkle, Cybergrunk and more
User 1: "Hey man, my dad just died"
User 2: "Aw Shunkles, that is quite funkle."