The slow and lazy soon gave way, though, to something more insistent. It was an urge, something from deep inside, not anything that he could control.

He wasn't bucking into Spock's mouth, but holding the Vulcan's head steady as he fucked him, Bones felt a surge of power and control run through him as he stilled, emptying into Spock, groaning loud and shaking.

One hand pulled lightly on an earlobe as he steadied himself against the bed, his body drained.