Jurassic Prick by Mitchell St. John
Fandom: Jurassic Park
Oh, god, I hard a hard time reading this one.
This is probably one of the most ridiculous "erotic" fanfics I've come across. Dr. Grant gets an erection from everything, Lexie and Timmy are eager to have sex with him, and Dr. Grant has no hangups about having oral sex with two children.
Also, the story is split into two parts, but I had to cut off my reading quickly because, well, it would be awkward for my family to hear me reading a story about two kids having sex with a grown man. So, feel free to read part 2 at your own leisure (it's not very long).
Download/Listen on 4shared.
Read it here.