No matter how hard I suck, he just won't cum. All I want is his cum. It's driving me crazy, and probably him too. I stuff his cock as deep as it will go down my throat, and all the bobbing and deep-throated mouth fucking in the world just makes him moan in more agony. Borderline painful moans, like he's absolutely suffering with his dick inside my mouth. I don't get it, just cum already!