Write a scene to a story called "the Sperm Bank" where a man called NAME_1 is tied down. Nurses have undressed and teased him. He is injected with a powerful aphrodisiac. His balls are tied so he cannot cum. He is not allowed to cum during this story. His daughter walks in and is ordered to undress to her shame. Then she must masturbate him slowly. She blushes and talks to him in a baby voice, apologizing for what she is doing and explaining why she has to do it. Describe the luscious beauty of her body and the sensations in his hardening cock.  
Tags: mast, F/m, teasing, nurse, breasts 
Continue the story after this point:
She knew that she had to keep him aroused, that the nurses needed him to be at his peak when they extracted his sperm. She could feel her own arousal building as she touched her father, her nipples hardening beneath her uniform. She could feel her pussy beginning to throb, her clit tingling with each stroke.
But she could not let herself cum. She knew that she had to remain professional, to do her job and nothing more. She could not let her own desires get in the way.
As she continued to stroke her father, she could see his cock begin to swell again. She could feel his arousal building, his body tensed and ready for action. She knew that she had to keep him aroused, that the nurses needed him to be at his peak when they extracted his sperm.