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Rad and fantastic combined making a force to be rekoned with. If you are radtastic you are the best.
That movie was so radtastic i bet it will get great reviews
by sctso April 28, 2003
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Aug 1 Word of the Day
the act of texting people while you are pooping
ex. (talking to a friend on fbook chat)

person 1: hey man whats going on tonight
person 2: i gotta go to the bathroom il poopt you

or

person 1: whatsup man what are you doing?
person 2: poopting you
by mr.poopter January 26, 2011
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2
(adj) Something so great, or tremendous, and unbelievable that it supersedes all other synonyms of both good and extraordinary.
Although she was nothing more than an iconoclastic misanthrope, she had to admit that her adversary's discovery was radtastic.
by Bradley Darren Davidson November 14, 2006
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3
The most rad'st thing that can come up to mind
Dang T.A.K is like the most Radtastic skate crew out there man!
by Devin Starr May 15, 2009
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4
something so fricken cool you couldm't even use the normal word "rad" to describe it!!
that was SO radtastic!

you are very radtastic
by asdfcodyjkl; July 19, 2008
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