Cammy's heels of frustration

You keep up the rhythm, sliding your feet around his cock with your soft arches and playful heels, but he holds on, gritting his teeth through every stroke. Frustration starts to build as he resists, and your determination falters just enough for your heels to slip off. With a sigh, you kick them aside and try to double down, but you can already feel the control slipping from your grasp.