Derek slides in right to the hilt, and Barry can't hold back a sound of pure bliss as the sensation of being stretched fades, giving way to being gloriously full. He doesn't even have time to catch his breath before Derek is pulling him back onto his cock, setting a rhythm that would be brutal if it weren't so fucking good.

"Yeah," Barry manages, his voice the barest sound but one easily picked up by Derek's ears, and Barry curls his fingers against the blanket, seeking purchase to push himself back to meet each thrust. Derek's cock drags just right within him, and Barry can't help but keen. "Right there, please," he gasps, "That's perfect, you're perfect."