On the bike, her big booty takes center stage, each pedal stroke accentuating its round, firm curves. She keeps her eyes on the prize, her pussy throbbing in anticipation of a release that has nothing to do with the workout. Her asshole clenches and relaxes, a tantalizing preview of the filthy, uninhibited fun she'd like to have off the bike. The workout becomes a dance, a tease, a promise of what's to come.