- femtomush
- Speech so arcane, byzantine, or drivelous as to be of little or no use, even to casually tolerate in polite and generous company.
Did you hear what he was talking about? Pure femtomush.
Man. I can' take that prof's femtomush. Can't he speak plain English?
Grade F: Comment: Your paper is full of femtomush.
Dictionary of american slang with examples. .