Alvin feels something soft thumping against his leg and realizes it's Darcy's tail wagging. He likes being praised. He starts gently kissing Alvin's neck, getting wilder as he gets closer to coming, shaking more and more
His tail wags much, much faster. He kisses his neck harder, starting to suck on it, giving him hickeys. He shakes harder, pre-com dripping from his p3nis