Megan Marx, my step sis, thinks our dry humping is odd, but I'm loving every second. She grinds her panties against my hard cock, her pussy lips swelling with desire, as we sit close, watching TV. I hold the camera, capturing her innocence and our taboo dance, her breath hitching as she rubs her clit against me. She tries to maintain her composure, but her body betrays her, her nipples hardening beneath her shirt.