Severe and irreversible boredom. Usually accompanies talking to people you rather not have anything to do with,constant yawning, and extreme sarcasm.
"This Saturday night is so fantasmaborical. I can barely contain my joy!"
by Ding-A-Ling February 05, 2005
1 more definition
Something is so amazing, real words cease to describe it.
YOUR FIC IS FANTASMABORICAL. I NEED MORE.
by rosiegolucky January 15, 2011