Simple instructions

You walk up to your house, and practically burst through the door, unable to contain your excitement. None of the lights are on in your house. You see a business card on the ground in front of you, so you stoop to pick it up. It is one of your mother's business cards, for the consulting business she runs out of your house. You turn it over, and on the back are the words "go upstairs" in your mother's handwriting. You wander through the mostly dark house, and up the stairs, towards your parents' master suite. All the lights are off upstairs as well, and it seems that most of the curtains are drawn, so there is only just enough light for you to see where you are going. As you reach the top of the stairs, you see that the door to the master bedroom is closed. There is another business card, wedged in between the door and the frame. You pull it out, and struggle to read it in the low light. It says, in small printed handwriting, "take off clothes and enter." You do as you are told, quickly stripping off your clothing, and dropping it to the floor before opening the door and entering the bedroom.

The curtains are drawn in this room as well, and only a single reading lamp near the head of the bed provides light. You see on the bed your mother, nude, on all fours, ass towards you and the door and face away. The sheets of the bed are disheveled and spread out. On the bed next to her you see a bottle of lubrication and a vibrator. Her body is the prime attraction, however. Her knees are near the edge of the bed, and her ass is held high in the air, giving you an excellent view under the light of the reading lamp. You walk a step or two closer to it to get a better look. You can see that her asshole is slightly open, and glistening with lube. On her lower back, written in lipstick, are the words "fuck my ass," and a small arrow pointing towards it. Further up on her back are the words "grab tit" and an arrow pointing towards her side, and on a shoulder blade, "pull hair" with another arrow pointing towards her neck. Your mother says nothing, but just remains silent, on her hands and knees.

Seeing it in writing is more than enough for you. Understanding that this is a game of silence, you step up behind her without saying a word. With your hand you guide your cock against your mother's asshole. It has been worked slightly open, a thoughtful gesture by your mother, and immediately accepts your presence. Lifting your hands free of your cock, you reach out one hand which you wrap in her hair, and with the other you reach around her body to take her tit into your grasp. Holding her body in place, you shove your cock inside her. The going is easy at first, having been prepared for you, but you no more than have the head of your cock in before it tightens up considerably. Nonplussed, you continue pushing, pulling your mother towards you at the same time by the hair and tit, until you are fully inside her. Your mother remains silent throughout this, though you can feel her insides stretching to accomodate you.

You slowly pull your cock back out of her about halfway. Pulling back like this allows you to fully appreciate the sight of your cock firmly planted into her frim, round ass. You are tempted to give it a quick, sharp spank, but then you think, grinning, that your instructions are clear: fuck her ass, grab her tit, pull her hair; there are no instructions to spank her ass. Very well, you think. I can do these three things well. You do all three at once. You shove your cock back up her innards, quickly this time. You dig your fingers into her tit, clutching it tightly and pulling it towards you, forcing her body up slightly, and her back to arch. Small folds of skin squeeze through the spaces between your fingers. You yank hard on her hair, snapping her neck back, and holding it in that position. With her back now arched and her head snapped back, you can see that she is holding a piece of wood wrapped in leather between her teeth, though the low light prevents you from making out any of the other reactions on her face. You can only assume she is biting hard on that gag, an assistance in keeping her from screaming or making any other noise.