Something allegedly fantastic or good that you know to actually be unbelievably shitty.
Person A: Everyone likes dogs because they're so great. You like dogs, right?
Person B: Yeah, dogs are shitastic.
by John_the_WOTist March 13, 2003
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The felling that over comes a person after taking a shit that makes you feel good.
Tim was feeling like shit all day untill taking a massive shit now he feels shitastic.
by I am Sean February 23, 2009
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i had the most shitastic day when everything was going wrong AND THEN it rained
by Anonymous June 13, 2003
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Something or someone so amazing, horrifying, or fantasical that is makes one have the feeling of or actually shitting
Driving on the parkway today was shitastic!
Dude, that trick was shitastical!
A:Oh My God I think I shit my pants!
B:Why?
A:I met Robert Pattinson!
B:He's so shitastic!
by hellsrogueangel February 24, 2010
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something so fantastic that you want to add profanity to get your point across
We just won the game, that's shitastic!
by Peter Rugh September 3, 2003
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something that sucks balls, but you want to give a positive spin on it.
-It's really boring, you watch a video then take a quiz on it.
-Shitastic.
by beth's idea October 20, 2009
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Person 1: That guy just shot a bottle rocket up his ass.

Person 2: Oh my God, that's shitastic
by Toshing it out there November 15, 2011
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