The term "fluberdah" can be a noun,
onomatopoeia, or
adjective. It can be basically anything
you would like it to be. It's even a common animal. I have a pet Fluberdah. His name is Roberto.
Imaginary animal:
Carl: EAT THE FREAKING
GREEN BEAN, ROBERTO!!!
Fred: Hey Carl, who are you talking to?
Carl: My Fluberdah.
Fred: Uhh...
Carl: You have no
imagination. You obviously fail.
Onomatopoeia:
News Reporter: What did the microwave explosion next door sound like?
Anna: FLUBERDAH! Then silence.
Adjective:
Mother: Honey, what does the milk smell like? Is it expired?
Honey: It smells like Fluberdah.