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1.
adj.

Usually refering to pie or Mongolian carpenters named Stu.

Amazingly good

WEASLE BURGER!
"Holy crap! Thats amazingly PIETASTIC!"
by Majic Karlos March 12, 2004
 
2.
1. Has to do with a failure, or lack of skill, or a person who is bad/a fail, or something that you dislike

adj
1. it was very Pietastic when George lost his virginity to a rose.
by pierrman1 March 27, 2011