The duration for which you can wear a metal butt plug largely depends on your comfort level, experience, and personal preferences when it comes to pleasure. For beginners, it's sensible to start with short periods, such as 15-30 minutes, to allow your body to adjust to the toy. As you become more accustomed to the sensation, you can gradually extend the wear time, but always listen to your body. Remember that prolonged use can lead to issues like soreness, chafing, or irritation, so it's essential to remove the plug if you experience any discomfort.