A sissy's journey into bi-sexual pleasure begins here. Bound and gagged, they're positioned perfectly for their first lesson in cock sucking. Their mistress, a stunning bisexual domme, watches with satisfaction as they struggle to take the immense, veiny cock in their mouth. She guides them, her hands firm on their head, pushing them deeper, making them gag and choke. The room echoes with the sound of wet, sloppy sucking, the sub's muffled moans, and their mistress's delighted laughter.