"We mustn't," Michelle whispers, even as her hand slides into her brother's pants, wrapping around his throbbing cock. Her brother, equally conflicted, leans into her touch, moaning softly. They're both dressed, but the intimacy of their position, the heat, and the forbidden nature of their act have them both on edge. Michelle's pussy throbs, soaking her panties as she strokes her brother, their breaths coming in short gasps. They're teetering on the edge of sin, but the pleasure is too intense to stop now.