fantafuckingtabulous

Adjective: to describe in a somewhat sarcastic manner an event/object/person that/who is supposed to be fantastic and fabulous but has failed to meet your expectations

Suzie: so, Carla, how was the show last night??
Carla: it was fantafuckingtabulous... the lead singer couldn't sing and the drummer wasn't even remotely attractive. i'm so disappointed..