Sam helps ease Dean onto the toy, his body shuddering as it slowly slides into him. He breathes haltingly, grabbing tight onto Sam’s wrist.
“It feels really weird,” he exhales, never knotted before.
“First time always does.”
Sam encourages him with a kiss, biting down on the junction in his neck as he presses the toy deeper into him. As slick as he is, Sam still struggles to push the knot into him.
“Hold still,” he says low, easing it in so slowly Dean barely reacts when the widest point disappears inside him, making him full for the first time.