"Oh that's not fair-" He shouldn't be surprised by that but he is just enough to have his voice crack around the muttered curse the next suck causes. He can't be anywhere but here and now, thighs trembling, head lolling, breath coming in sharp pants. He wants to and can't hold off, not when he's working so damn hard around him. Not with that slick wet heat, not when he cracks his eyes open and sees David looking up at him with his mouth stretched shiny and sinful around his cock. "Jesus christ-"