"That's it," Derek encouraged, fingers lightly tracing the boy's jaw, the line of his throat where he could feel his cock, then back up to trace his lips, where they were stretched around his cock. "Take that cock, make it nice and wet. Isaac's gonna open you up for me, and then you're gonna open him up. Think you can handle that, Stiles? He's already plugged up; it won't take much, and he's such a good fuck."