ADJ. When an idea that is considered "fantastic" by its creator, is in fact seen as Crappy by anyone who is exposed to it.
Seriously, that was the most Craptastic presentation I have ever seen!
That website is so craptastical there should be some kind of an online penalty
Look at that craptastical website, it's hurting my eyes!
adj. Excessively unpleasant, extraordinarily disgusting, extravagantly horrible or unbelievably awful.
Oh great! This is just CRAPTASTICAL...my toilet is flooding and I have a hot date who is about to show up any minute.