One hand reached immediately behind him, bracing himself. If the bed hadn't been there, he'd have fallen to the floor, so intense was the sudden heat on his cock, like a warm, wet vise. Bones caught his breath and looked down at Spock on his knees.

His hands moved to settle in Spock's hair, threading more roughly than he intended, but the pull on his cock was intense, pushing all other thoughts from his head other than the amazing sensation of fucking that hot mouth. Canting his hips into and out of Spock's throat, Bones blinked hard at the sight as he held himself up on shaking arms.