Disclaimer: As always, JK owns It all, nothing to me, characters, Hogwarts, whatever, it's all hers.
-Ban-
Lupin tugged on the sleeve of James' robes. "I think he's gone crazy, completely crazy!" he muttered out of the corner of his mouth. James looked on in astonishment and Peter stood, open mouthed and gaping at Sirius as though he'd just tore off his robes and proclaimed that he was becoming a monk. Although the monk part was close enough! He wasn't joining a monastery, no. But Sirius Black had stood up in the middle of the common room and declared to a stunned audience that he was no longer going to chase any woman that moved, but was going to try and find the special someone.
Lupin had laughed at first, but he could tell by the serious look on Pads face that this was no joke, and he was deadly serious! "I'm banning myself. That's right, this is a complete ban!" He'd said, as if his idea was a stroke of utter genius James had stared at him with the same look, half amused and half shocked. And so they had been for five minutes of absolute silence as they contemplated what had just gone on. "Who the hell are you and where is the real Sirius Black? What are you going to do next, exclaim that you love your mother?" James asked, chuckling at his own joke.
Sirius clearly didn't find this a laughing matter. The serious look still on his face, he decided to explain his plan in more detail. "No, Honestly, I'm not going to chase a random amount of skirt any more, I'm looking for…" But his little speech was interrupted as his attention was caught by a pretty girl walking past in a pretty short skirt. Sirius lost his track, and his head tilted to the side a little. "…the one. And maybe that's her, so if you will excuse me!" Sirius said, regaining composure and sorting his appearance before walking toward the girl. Lupin rolled his eyes and took a bite out of his chocolate. "That's that ban over with then!" He said, letting out a small laugh.