He lets Randy decide.

“So, Randy what do you want for your reward?” Matt asked waving his dick at her.

Randy bit her lip as she watched his dick and finally said. “I want you to make me your slut.”

Matt looked Randy over noticing how much she had changed. She had started to develop a very womanly shape. Her body hair was gone, and her hips had a nice curve to them. She had grown a bubble butt and had a B-cup breast size at least. Matt noticed her lips were now full and plump and her face looked like a female pornstars. “Well if you want me to fuck you. You should come get my cock nice and wet.” He said and she came over to put his dick in her mouth drooling and spitting on it.

When she had him nice and lubed up, he helped her stand and turned her around. Matt spit onto her asshole and used his fingers to get her ready. He hit the door release on the car trunk and sat down as Randy climbed on top of him. She groaned as she slowly lowered herself onto his cock. Soon she was bouncing on his dick letting out cute little moans and squeals as she rode him.

Matt watched as Randy worked herself up and she was soon rock hard as she ground her prostate against his dick. After a few minutes she screamed and shot her cum all over the ground as she climaxed. Matt waited for her to finish before he said. “You ready to go to the mall now.”

“But you didn’t cum.” Randy said looking back at him in disappointment.

Matt smiled and said. “I figured a cum slut like you would want to drink it all on the way there.” He helped her down and she giggled as she climbed into the car. Getting in the driver’s seat Matt had barely gotten his seatbelt on when she was back in his lap hungrily sucking on his dick. Starting the car Matt pulled out of the space and headed for the mall. Fifteen minutes and one cum shot later they were pulling into the parking lot.