The Magnum Challenge JOI - *See how you measure up.* Think you're a real man? Want to prove to me that you're not just another loser? Take my Magnum Challenge and find out. For this clip, you will need one Magnum condom. Go out and buy one, dork, and watch the cashier try to stifle a laugh, knowing there is no way in hell you actually fit in one of those. Get ready, because if you fail, you're in for a cruel and humiliating punishment.