She takes his cock in her mouth.

The queen of the Seven Kingdoms starts working her tongue up and down Bran's cock tasting every part of it, she then looks up at bran slapping his impressive member lightly against the side of her face "Do you wish to feel the mouth of a queen boy?". Bran looked at Cersei and nodded unable to speak as all his blood was going to his engorged cock.

Cersei let out a light giggle as she slowly began teasing Bran's huge cock with her mouth kissing it, suckling on the tip of his cock, and fondling his cum filled balls. Bran had never been teased like this before, he could feel himself getting close. He looked down at Cersei and whispered "My queen I am going to cum?"

Upon hearing this Cersei tightly squeezed his balls hard, and said "You will not, you will cum when you are told do you understand." Cersei began playing with his cock and balls some more enjoying it to her hearts content.