Julia, your stepmom, has a new game for you. Today, it's a metronome challenge. She sits you down, her voice a sensual whisper, setting the pace with the ticking device. You stroke your hardening cock, feeling the pressure build. Julia's commands grow more explicit, guiding you to the brink, then pulling you back. Your thighs tense, your abs clench, and just as the metronome hits sixty, Julia tells you to let go, your hot load spurting out in a rush of relief and triumph.