Kiana's quite upbeat at the start of the scene - already excited about impaling her bitch with her big black cock. Her bitch is a lot quieter - starting to fear the stretching his manpussy will take. Once Kiana's into action she's quite slow and quiet - to start with you're not sure she really is driving deep into the bitch, and then the camera angle changes and you see yes - she's taking him all the way.