Mistress Flame is acting so sweet to the slave, lovingly stroking and handling his penis. She even leans over and gently kisses the slave on the lips, putting him totally at ease. But it doesn't last. She starts to focus more and more on his balls, and with more focus comes more pain. She slaps his balls, taking delight in the response it brings from the slave. "Awww, does that hurt?" she so sweetly asks as his screams build. But he's bound and clearly not going anywhere, so the ball slaps continue.