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To be on a level beyond merely hot or fantastic, into the area that no word yet exists. Tastic to the degree of hot.
That car was hottastic. Did you see that woman, she was hottastic.
by sprank August 31, 2006
a guy (or girl) that is hotter then hot that it is fantatic.
Katy:OMFG He is ssoo hottastic!
Hannah: I know right
by Rachael Ann M May 24, 2008