"She had to the restroom but did speak of meeting you here which is how I knew about you." She told you as she tossed the remains of your clothes into the stall before leaving it nearly closed yet you can still see out of the stall. You thought about what happened to you as you calmed down. As you thought things through you remembered you did have a thing for transformation porn involving humans turned into animals. You decided to go with it after all it was you kind of thing but did admitted you would had liked to have it happened on your own terms.
You girlfriend came in a few minutes later. She asked about you and the attendant said you were nearby and said she would get you. She left the barn which you took as your time to turn your girlfriend. You neighed bringing her attention to you. "Whoa. I knew this place would be a interesting one to check out but this is cool!" She said to herself as she entered the stall and saw your new form. She stepped up to you and started petting you not noticing the door to the stall closing. She petted you for a few minutes before noticing the remains of your clothes. As she bent down to pick them up with her back to you, You moved and mounted her. Your cock pressed against the shorts she was wearing as you thought about them and her underwear disappearing for you remembered what you know of unicorns they are said to be able to use magic. They vanished into thin air showing you can which gives you a few ideas as you press you cock into her pussy...