Top Definition
adj. An expression that means something that is a scam and a waste of time. Usually used as sarcasm and a replacement for fantastic.
Marc:I bought a shamwow and its scamtastic! (sarcasm)

Mike: Dang I lost all my money at the casino, scamtastic.
by iiScAm August 11, 2009
7 Words related to scamtastic

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