F'WAH!

Fwah, also spelled "F'wah," is a cosmic sound made by the Universe. Sort of like, "Om," but less dignified. It can also be used as a sort of enthusiastic greeting, usually immediately following the person's name. Also known as an emotion of impending disaster.
"Galactus! F'wah!"
"This cosmic notion fills me with a great sense of fwah."
"Tony! If you don't turn off that Gravonic Blaster, this whole neighborhood is gonna go f'wah!"

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