Jenna was tall and smart and intimidated lots of men, without ever meaning to.
But her brother knew who she really was and what she really loved. Things like, being used roughly for sex and being forcefully mouth-fucked and choked while being called slut and dickwhore.
It took her back to when she was younger and smaller and was learning about sex. With him.
She loved being his dickwhore, because he used her the way she always wanted to be used.