Combination of the words pussy and fantastic. It actually means the opposite of fantastic. Used to express something that is bad.
That bathroom smells pustastic.
by Rebee June 16, 2008
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Commonly defined as one of the following:

1.) Pussy
2.) A Huge Poop
3.) "You lick someone's pussy"
1. Man I can smell Victoria's Pustaste from way over here!
2. Holy shit! I just dropped a huge ass pustaste in there!
3. No one likes you, Olivia... PUSTASTE!!!
by PUSTINATOR November 7, 2009
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