Showed up to my personal training session to find a big surprise! I start doing squats over the exercise ball and something pokes my butt! My trainer planted a kinky surprise. I'm confused yet turned on as the dildo ball rubs against my ass. I can tell my trainer is also turned on by the bulge in his shorts. We kiss and one thing leads to another. I suck him as I bounce on the dildo ball, then I stand and get fucked from behind as I bend and suck the ball. I then get a really good leg workout as I ride him on the ball, my legs can't take anymore so I lay ass up on the ball and let him fuck me from behind. He cums across my big butt and leaves me there with the mess.