Imagine her just grabbing you by the skull with her vice strength hands and just throwing your naked body onto the bed
"You are my toy now"
She sits on you and plays with your trembling penis
"If this comes before I do, you die" and she laughs
And she plays with it more and more and you desperately hold the coom in and she finds it funny
Then she just sits right on top of you and grinds while looking you right in the eyes mockingly, and your balls are screaming "LET THEM OUT! LET THEM OUT"
And she just laughs as she grinds harder, and harder till she's battering your cock as if it was a piston in a deep underground boring machine and she groans "MORE MORE, MORE" and every fibre of your being wants to erupt in coom but you can't, she isn't satisfied yet and she's hipthrusting away with enough force to break Hephaestus's anvil
Finally she orgasms, and she smiles contentedly
"You may now come" and you just erupt, all that built up energy bursts inside of her and she gently caresses the side of your face with a loving touch, but then
"That was reasonable, but next time, I expect to be overwhelmed" and you're afraid, you're scared, that was all you had and it was barely enough for her, you know, next time, you must be stronger, you must be more manly, perhaps you will become her favourite
And she walks off, vagely amused, and returns to ruling, with her iron hands