Better than Fantastic. Even more grand. Basically a twofive on a scale of one in the fantastic department. But not quite a twofive bc twofive.
Subject A: "I just got a new kitten!"
Subject B: "Oh really? Dang aw how exciting.. Wait.. is it black.."
Subject A: "HECK NO NOT BLACK CATS OH NO"
Subject B: "OH WELL THEN YEAH! KITTENS YES! WOW THAT'S JUST GRANDTASTIC."
The act of being excited in a mannerism state.
He was so excited about his teacher giving him a free lunch that he cried out a woothe.