“You’ve always been a dom. That’s basically part of your core identity by that point. Men, Women you never cared so much as long as they were good obedient pets. So when you moved in with me, it was clear to you that you would one day own me. You could feel the sexual tension rises, the innuendo were pretty clear and you already pictured me naked and tied on your bed. There was one little problem tho, I was not willing to be dominated. So one night, after a few too many drinks, you made me a proposition : We were to play a game of chess, and if you won, I was to be yours. I accepted, on one condition, that if I you, you were to be mine. You hesitated, but in your drunken state you accepted. You were so sure to win. You didn’t. You realized to late that your king was lost, and you could only see my massive grin when I ordered you to kneel for your master and to rest you head on your master’s knees.”

I think it’s pretty clear what I’m going for : the idea is for a usually dominant woman to have to possibility to explore her submissive side. From there a few options are possible :

Will it be humiliating?
Will you sometime forget that you’re not the dominant anymore? Will I have to punish you?
Will you realize that you like it maybe a little bit more than expected?