She is the executive; he is her personal assistant. Or she is the wealthy socialite, and he is her personal trainer. Create your own scenario where she has the money and power and his only means of getting on top is his sexual power.
Foreplay is her telling him what to do and how. Get specific:
• “Take my nipples between your thumb and first fingers and gently squeeze.”
• “Lick around the sides of my clit with the firm tip of your tongue.”
• “Put your hands on my ass and squeeze in time with your sucking.”
The more aroused she gets, the more dominant he becomes—for example, ignoring her instructions but giving her something else that she loves.
When she is close to orgasm, she orders him to finish her orally. He refuses. Putting his erection close to her lips, he says, “Suck me.”
She fellates him until he is near orgasm. He pulls out of her mouth and takes her vaginally in the man-on-top position.
............