Stiles moans softly around Derek's cock in his mouth, lets the vibration of it course through them both, in his throat and along the man's dick. Then he pulls up and off with a wet pop, licking his lips and panting a little. "You can- you can fuck my mouth if you want," he breathes out, face flushing a little - both in embarrassment at saying it so bluntly and arousal as well.

His gaze moves over Derek's face, takes it in- his expression, the look on it and then travels down his body where his hands are clenched in the bed. He licks his lips again as he looks back up to Derek. "You can touch me, too. You can... uh, wolf out, if you want. Claws, fangs, whatever." And it thrills him a little to think that he'd make Derek so aroused and turned on that he'd wolf out because of it. The thought alone makes his dick throb and he has to drop his free hand to press the heel of his palm against the bulge in his boxers.

Then he goes back to the task at hand, lowers his head and takes Derek back into his mouth, nearly all the way own until the tip hits the back of his throat- then past it as he takes him down even further, past whatever gag reflex he might have had if he'd had one. Then he swallows, throat convulsing and muscles fluttering around Derek's cock.