Each other.

Robb groaned around her nipple as his mother stroked his dick, her hand moving rapidly up and down his hard length. Her other stroked his hair softly, as she leaned forward, and planted a kiss on his forehead. "I want you in me," she whispered in his ear. Robb moved away from her breast and kissed her again on the mouth, then stepped back, taking off his shirt.

"Turn around," he muttered, in a dark, commanding voice. "I want to see that sweet ass."

His mother did as he asked, leaning forward and revealing those taut cheeks to him with a cheerful chuckle. "Do I meet with my Lord's approval?"

Robb grabbed her by her shoulders and rubbed his hardness against her. "Does it feel like you do?" he asked.

"Mmmmm," murmured Catelyn. "That's nice." She gave a sharp little hiss. "Now stick it in me, son. Stick it in me like the motherfucker you are!"

Grabbing his cock, Robb lined it up with wet slit. After giving a couple preliminary rubs in preparations, he shoved his member in her, hilting in his mother's tight cunt. As his hands began to maul her tits, the Lord of Winterfell began to pound the pussy that had spawned him...