Master uses my slut socks and feet

Master tied me up and left me to struggle on the bed in my muzzle. The hogtie was getting a bit uncomfortable so I was happy to hear the door open and Him come back in, but not for long. He wanted to take advantage of my feet and feel my slutty, knee high socks rub up and down His cock. I could only oblige Him, arms still tied behind my back and vulnerable. He fucked my feet and I did as I was told, wriggling my toes, rubbing my soles up and down His long, thick cock. If this is how Master wants to use me, I must accept it and do as I am told.