Boot Slave Trapped And Used

Ive put the slaves head in the box and also bound his hands and feet. Now hes completely trapped and I can use his mouth to clean my boots. Sometimes I stand on the box, sometimes I sit down on the barstool - but of course Im rubbing my dirty boot soles all over his tongue all the time! So pathetic to see his tongue trying to reach all the dirty spots on my boots but thats just what a boot slave loser deserves!