"Can't prove that yet. You're only a tease when you don't put out." Sirius grinned, grabbed the key and then turned away so he could unlock the door. He held it open for Remus to go through first, then gestured to the stairs. "We're three flights up, I'm afraid. That's where the nice arse really comes from, if you have to know."

Well, some days it could be quite the hike, especially when he was drunk. Which was a rather frequent occurrence.