She'll just have to watch.

Kushina had the devil in her eyes, pupils dilated with greed as a single drop of drool fell from the corner of her mouth and she literally slobbered on Sasuke's amazing cock.

"Do you see it? This tool of power that all those academy girls coveted since you and Sasuke were still It school? It's instinct, you know, why they flocked to him and not you. Women can smell men, real men, that is." With two hands she massaged the firm shaft making it grow, impossibly, two inches larger. "Well, today this dick, this Uchiha treasure is all mine and, as I take it within myself, as it ravages me inside out, stretching my pussy and making me come again and again, and you... won't. even. get. to. touch. it. Understand?"

Naruko's only response was a sad little, defeated whimper.

"Enough talk, slut." And with a swift movement, the Uchiha pinned his woman to the ground, palms firmly against hers, as the large masculine frame overshadowed Kushina. "I was promised a first-rate pussy, so no more teasing."

"Ahh!" The Kunoichi moaned sharply as Sasuke stabbed her with his pilar. No ceremony, no foreplay. It was time to fuck.

Naruko was entranced. She knew porn of course, it was the only action poor Naruto could get, but no one had told her anything close to this, the animalistic side, how Sasuke vigorously exercised his manly rights to sate his urges and his mother could only acknowledge between whimpers that her male partner was in the right.

It was at that time that Sasuke looked at her, still relentlessly pounding Kushina, and lust, sharingan clear, in his eyes.