Sirius smirked at that ass, yes, he really did exact to be fucking it sometime soon. Though, his eyes shot up at the prospect of bottoming for Snape. It's not that he's sickened by the idea. In-fact his cock gave a slight twitch at the idea. It was just...

"You've already came. Shouldn't I get to "take" you first?"

After all, it only seemed fair. his cock was still hard and aching, while Sirius had already taken care of Snape. His eyes wondered down the others boy for a moment before flickering up to meet Snapes eyes.

He folded his arm his arms over his chest, trying to remain dignified while naked.