For the first time, Isaac nearly choked on Stiles' length, managing to control himself, as his throat convulsed hard around the shaft. It sounded odd, as though it was Derek's words coming from Stiles' mouth. Or maybe it was a new side to Stiles. Whatever it was, it had Isaac shivering, and giving a minute nod of his head.
He let Stiles grip on his curls keep his head upright, as he reached behind him and found the base of the plug. He tapped lightly at the end, each tap sending a flash of pleasure all through his body. Grasping the base, he worked it in and out, by barely a fraction of an inch, loosening himself around it. Finally, he felt his body give, and the warm glass slid free and dropped down beside the bed. Isaac could feel a small trickle of Derek's come, slick between his cheeks, and the scent of it was strong in his nostrils again.