A very dark fanfic, notorious among fans of Animaniacs.
Basically, the plot is about the oldest Warner sibling,
Yakko getting in a fight with his brother
Wakko and his sister Dot. He then drinks a glass of milk, and due to being lactose intolerant, it fucks him up. The fanfic is about him going through nightmarish hallucinations, and being driven to the brink of insanity. The few times he's awake, he's split between love for his siblings, and
blind hatred. Most of the nightmares involve his siblings dying, and two demonic voices telling him he's worthless. If you wanna read it, be careful, it can seriously mess you up.
Example:
"This seems like a good
fanfic, 'The milk fic'"
"Don't
read that dude. I read it, and it seriously
messed me up for like, a week."
"Sorry, I didn't hear y-" -gets messed up for a week-