He lets out another loud groan from behind her, one hand giving her butt a firm, lusty squeeze. His dicks throb harder between her tits and in her mouth. As her hands squeeze his knot, she can feel it get hotter and throb powerfully, making her fingers move slightly with every beat of his heart. He's started thrusting his hips upwards slightly, though it seems to be more reflexive than anything else.
His tongue starts lashing around harder inside her ass, before punching in and out of her ass like a slim, slick tentacle. Now he was literally tongue fucking her bum.
His fingers continue teasing her pussy. For a moment, they pull out, spreading her pussy, and she gets the vague feeling his getting a good look at her insides. Then, his fingers dive back in, eagerly searching out her g-spot and rubbing it roughly.