With royal pleasure.

His mother's lips trembled under his. He continued to maul her breasts in his hands, as his tongue plunged down her throat. Eventually, he pulled away, regarding her with a satisfied sneer.

"Joffrey," she stated with a whimper, "what... what do you wan...?"

Joffrey gripped her face with one hand. "You will address me as 'Your Grace'," he hissed.

"I... yes, Your Grace," she murmured. Joffrey released her breast, with a twinge of regret, and placed both his hands on her shoulders.

"Now, kneel before the king," he said, pushing her down. Cersei quickly went to her knees, so that her face was now level with his crotch. "Undress me," he commanded. As he watched, his mother nervously unlaced his breeches. As they fell around his ankles, his cock sprang free, nearly striking his mother in the face. Cersei stared at his hard member for a moment, in what Joffrey rather hoped was awe. Finally, he gripped her head in his hands, and guided her towards it. "Pleasure me with your mouth."

"Of course, Your Grace," whispered Cersei, before swallowing her son's cockhead. Joffrey groaned as his mother expertly licked and lathed his swollen member, watching with astonishment as she swallowed the whole thing with ease.

"Oh, you are an amazing cocksucker, mother," he muttered.

Cersei let his cock fall from his mouth and shot him a dazzling smile. "Thank you, Your Grace," she said, some of her usual queenly tone returning to her voice. She gave his dick a lick, then swallowed it again. Joffrey soon found himself overwhelmed with pleasure. If this kept up, he would come in his mother's mouth.