A word used to describe when you've had a fantastic,
fabulous, fantastic day. This word falls under the category of closed compound
words, and is typically used when you are too
lazy to move your mouth around when you could do it with -3 times the effort.
White Chick: OMG. I just went to Starbucks and I had the most fantabulastic
time!
White Chick 2: LOL. Really? What was it that made your
time there so fantabulastic?
White Chick: OMG. I CAN'T EVEN. They just released the
new Pumpkin Spice Latte! Totes my fave.