Kirsty is wearing her cow girl boots to step on her slave with, she walks all over his body walking along him and stepping on and off him, half way into the clip he then flips over and she then tramples all over his back and head stepping and walking all over him, her boots are very chunky and hard you see and head her victim in pain as she comfortably steps all over him crushing him under her body weight. (Clip is 8:05)