"Moony, you have to be free tonight," said Sirius, from where he was laying upside down on my bed.
"Well, too bad. I'm working," I replied grumpily. I was getting a bit sick of this newfound game James and Sirius had: 'Let's-Interrupt-Moony's-Schedule!'
"No! Moony! You absolutely positively have to be free," Sirius repeated.
He looked up at me, with sad eyes that absolutely positively melted me. I even gripped one of the bed's posters to remain upright. "Please?"
"Fine," I said, sitting myself down onto the bed, inches from Sirius' body, "Is this something to do with James' idea of 'doing' something?"
"You'll see. But yes. James snuck some Firewhisky out of Hogsmeade, and it's going to be proper party and all!" Sirius' voice rose a little in pitch as he said it.
"Sounds delightful. Well, I need to do my work, now, then," I said, and waited for him to leave. When he didn't move, I asked him if he wanted to just stay there. He nodded.
"Alright. But that means you have to be very, very quiet. Or I'm going to teach you a new game: 'Remove-The-Quill-From-Padfoot's-Eye!'"
Sirius mimed zipping his lips and throwing away the key, then propped his head up with his hand and watched me, and true to his word, didn't move or make a sound.