With a bang.

The savage fucking continued, as Robb's hard cock pleasured his mother's wet cunt. The room filled with their grunts and groans, as this forbidden pairing continued.

"Ohhhh... ohhh, mother," groaned Robb. "I'm going to cum..."

"Cum in me!" groaned Catelyn. "Fill my... pussy with your seed! AHHHH!" Catelyn began to scream in the pleasure of her own climax as she felt her son swell in her. Soon her cunt was filling with his seed as they both moaned in pleasure. And then it was done, and they stood there, breathing in heavily, as they were left with the incredible pleasure they'd just felt, and the unspeakable act they'd just performed.

There was a knock on the door. "Lord Stark, Lady Stark," came a servant's voice. "The Lord and Lady Arryn ask the pleasure of your company for dinner."

Catelyn and Robb were silent for a moment. Then they burst into laughter. "Tell them we shall be there shortly," said Robb.