My submissive partner experiences nipple and breast bondage while using a sex machine for intense pleasure

My partner is a true submissive, always eager to explore the boundaries of our BDSM relationship. Today, we've decided to take things up a notch and add some nipple and breast bondage to the mix. She's already bound and gagged, her body adorned in sexy lingerie and boots, ready for the intense pleasure that awaits. I've set up the sex machine, its powerful vibrations humming with anticipation. As I start to tease her nipples, she moans in ecstasy, her body writhing in pleasure. Then, I attach her breasts to the machine, the vibrations sending waves of intense pleasure coursing through her. The sight of her bound and gagged form, her nipples and breasts bouncing with each vibration, is enough to make anyone weak at the knees. But we're not done yet. I continue to slap her ass, the sound echoing through the room as I push her to her limits. This is extreme BDSM at its finest, a wild ride that leaves us both breathless and begging for more.