Mistress sisters Harley and Lilith wants to see if they can tear the skin from their human doormat's back under their aggressive Fila Disruptors. Harley, weighing 16 stone/106 kg starts first, then Lilith weighing 13 stone/84 kg takes it in turns. They stomp, jump, twist, scratch and tear their trainers over his back. Relentlessly seeing how much he can handle before tapping out. It doesn't take long for his back to turn a funny colour! Towards the end of the clip both sisters get on him to really tear his back apart! Up close footage and pictures of the damage is at the end of the clip.