My Slag comes to visit

It started last week when I invited my slag over to my house but on the condition she wore just a long coat and G strings only. She agreed but then I pushed my luck and then told her to place her 6” butt plug in her arse which she did as commanded. I picked her up I’m my 4x4 and made her sit in the back seat and open her cunt up while drove. It takes around 40 minutes to get to my house so I made her rub her cunt and boy was it wet. I’d placed a towel down and she was squirting I with 5 minutes off setting off telling her master she was a dirty slag and wanted to be used as I see fit and do anything her master asked. I pulled out the double ended dildo out of the gloves box and told her to use it on herself. I made her pull out her butt plug and give me it and as I drove the car I sucked on it and it tasted like fucking shit but was so nice and made my rock hard smelling her arse hole on the plug. Turning around at the traffic lights I noticed she was on her knees on all fours and stuffing both ends in each hole and really going to town on that double ended dildo. Squirting all over my back seat scream at me asking if sh could stop but I said No she told me she was going to flood the car with piss and cum. I told her to fuck and rub it hard and OMG she fucking did squirting piss only over hitting me on the arm and face in the front if the car. I told her she was going to clean it up the dirty slag and she better starting licking her mess up before I beat her arse and face hard.....to be continued