A combination of the words 'Awesome' and 'Fantastic' in order to describe something that its beyond either of the words on their own. An '-al' can be added to the end for an added effect.
Fred: Did you see Chuck Norris roundhouse 9 guys at once last night?

Tom: Yeah dude. It was awesometastic.
by Sneaky Pancakes June 04, 2009
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Cleveland Steamer Plush

The vengeful act of crapping on a lover's chest while they sleep.

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Awesome and fantastic mixed together to create the most amazing word in the WORLD!
Today was the most awesometastic day in choir ever(:
by MaddieDarling November 25, 2010
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Donkey Punch Plush

10" high plush doll.

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That cake was awesometastic! It was delicious and moist.
by akbeauty June 02, 2010
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Golden Shower Plush

He's warmer than you think.

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