The worst fanfic I ever read? I don't know what the fic was titled, but I do know how awful it was. It was an FFX/X-2 fanfic. To start, Tidus awakens in the besaid ocean and swims ashore in the dead of night, only to be disgusted with his apparel and magically change into a FUBU jersey and baggy jeans (proclaiming himself to be "So fresh, So clean" at the end of send change). He then arrived on the Celsius, and after a minor confrontation with Brother, convinced the tattooed maniac to instead focus his attentions on Rikku. So brother and his sister went off to fuck, as did Tidus and Yuna. Then the reader is treated to the knowledge that Tidus is a Saiyan, has a cybernetic laser cannon hidden in his arm (the arm transforms, you see. It is an arm that is more than meets the eye), and that Bahamut's fayth, who still follows Tidus around, is named Demon and the two of them fuse together to reach the final level of super-saiyan.
I cannot clearly convey just how atrocious this fic was, nor the sheer RAGE it instills in the reader (not just me, everyone I know that read it said the same thing, even ones who dont like FFX), or how impossibly LONG it is. That shit right there? About the super-saiyans? That's what finally made me ragequit after 4 hours of being mystified by this horrible work of what can only be dark magics. And I only made it a third of the way through.
But yeah, a fanfic that made me ragequit and hate all black people for a week. I think this wins the cake. That delicious troll cake. SO tasty.
Thats the worst part, this wasn't even intentional trolling, this asshole thought it was GOOD.