In part 4, Sinstress flogs Her sissy slave until his skin is pinkish red. She then scratches & drags Her nails down his back, leaving white marks on his pink skin. She continues to flog and paddle his already sore ass. As a reward for a good beating, Sinstress puts on Her strap on and teases his mouth with it. He has to lick the tip of Her dildo and suck it. This slut is getting put to full use.