A/N - Recently, at a list I belong to, some of us have uploaded scenes depicting suitable punishments for Snape's treatment of his students, particularily Harry (and Afterthought!Neville). Since I don't think Snape can legitimately be called 'abusive', I submitted this. It's short, and I had fun. Hope you enjoy it!
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Harry Potter and Neville Longbottom stood shoulder to shoulder on the crest of the rise. One lone figure made its way through the smoking ruins of what had become their battlefield. The two young wizards braced themselves. They had faced their worst enemies, this should be easy.
The figure drew closer. The pallid features of Severus Snape became distinct.
"What do you want?" he snarled up at them.
"We just want you to know that we really didn't like your classes. We didn't appreciate getting yelled at in front of everybody, and embarrassed. We didn't like having detentions when the Slytherins got away with worse. And, the time you tried to poison Neville's toad..."
"I had no intentions of poisoning the toad. And if you'll recall, Mr. Longbottom was successful in his next attempt to brew that particular potion."
"He's right, Harry," Neville said.
"All right. Forget about the toad. Still, you were unfair and unkind, and we didn't deserve it. You're nothing but a greasy git and you deserve everything you've gotten."
"Is that it?"
"Isn't that enough?"
"Potter, I spent nearly a year in hiding. During that time, I hid amongst Muggles. I found an interesting thing called the Internet. Have you heard of it?"
Harry looked at Snape suspiciously. "Yeah."
"On that Internet, I found some fascinating reading. Fan fiction. And it has shown me things about myself that I can honestly say that I am ashamed of."
Harry and Neville exchanged glances. "All right. What are you ashamed of?"
Snape fixed Harry with a harsh stare. "Potter, I am your father."
"Noooooooo!"