I'm a man possessed, driven by primal urges as I stand naked, my reflection staring back at me in the full-length mirror. My hand wraps around my throbbing member, pumping furiously, lost in the rhythm, the sensation. The room echoes with my grunts, my cock swelling, ready to burst. I feel the familiar tingle, the rising heat, and with a roar, I erupt, my cum splattering across the glass, marking my territory, a testament to my unleashed beast.