Billy stared at Frank for a second, like he was shocked by the command, or just unreasonably turned on by it. But eventually he did as he was told, and he let go of his cock s he could put both hands on the shelves again.

That was fine. He could still move his hips, and this helped him brace his weight. He rocked back to meet the lift of Frank's hips, moaning quietly at the sound they made when skin met skin. "You feel so fucking good."