"Are you sure?" He asked, quirking a brow, his face showing his concern. That look on Sirius' face worried him a bit, maybe he had hit his head a bit too hard when he fell. But, he seemed to snap out of it quickly enough, producing bottles from his pocket which brought a slight frown to his face. He should have known one of them would be stocking up. However, with Sirius around, despite what he knew was being planned, he couldn't keep a smile off his face for long.
"But of course," he replied half in mock excitement. It wasn't that he objected to them leaving their own mark, but there were things he did...like getting so drunk none of them would remember it. Sirius' mood was slightly contagious though, he couldn't help but feel the happiness that surrounded him - not that he didn't always feel happy when Sirius was around. "Around here somewhere, I assume," he replied, taking a little look around where they stood. "I haven't seen either of them in the last while." He eyed the bottles carefully, smirking as he reached over and took one from Sirius' hand, holding it up to look at. "Do you really think you are going to be able to convince me to get drunk with the rest of you?" Why should tonight be any different than the nights they spent at the Shack during school? They hadn't managed to convince him yet and he was curious as to how they would try this time.