https://www.fanfiction.net/s/3662190/1/Pirates-of-the-Caribbean-Into-the-Past

Not enough for this badficcer to create a Sue sister for Elizabeth who is, of course, also a pirate, but they had to jump into InuYasha as well. Prophecies, people turning out to be dragons--and by "people" I mean the Sue and her buddies...

Hey, troll fics are fine by me. They allow me to sharpen my "epic skilz" (misspelling intended).

If so, I'd like to take the time to bring up this ugly thing.

The reason I know of this... ABOMINATION is because it's got its own TV Tropes entry, which is how I stumbled upon it a few years ago. Here's the summary of said entry, which really speaks for itself:

"After venturing into a cave and getting a gold tube that grants him the power of flight, Indiana Jones finds his dad Dr. Jones and takes him flying... but then Dr. Jones has a shocking admission: He was sent from the future to kill Indy. Needless to say, Indy doesn't handle this too well, and Dr. Jones sends him into the future... first to the World Trade Center on September 11 (yes, THAT September 11), and then to the year 2008. Indy is distraught by the fact that his "history is now history", but then he meets a "really cool kid" named Andy who offers to help him get back to his time period. Meanwhile, Dr. Jones is plotting to take over the world, and he does so by running for "overlord of the world" by eating Barack Obama and John McCain.
And that's just the beginning of the sheer insanity on display.
Quite possibly the most insane and surreal Indiana Jones fanfiction ever written, the story is full of spelling errors, characters acting out of character, and generally makes no sense whatsoever."

You know, I wonder if I can claim this one. Not to sound masochistic and all, but I've... got some plans for it ;)

I might be wrong, but I found two fics on FF.net that might qualify.

https://www.fanfiction.net/s/7775173/1/Empty-Cradles

this one involves SasuIta paedoincest. bear in mind that Itachi is 13 at the time of this and Sasuke is 8.

https://www.fanfiction.net/s/8349097/1/Burn

if you thought the above was disgusting, what about SasuIta necro-incest gayporn? yeah, I get it.