Just a character riding on a horse. Combine this with some fetish clothing or toys, and you have a pretty fun experience. Adding an element of Hidden in plain sight, and it makes it even better.
Amy's Double Dildo Delight by Hudson
Amy’s Double Dildo Delight by Hudson (Archive Link) This lovely little dildo-pants story by Hudson follows Amy, as she tries out a special pair of pants she recently, “accidentally” bought at a market. After getting home, she decides to play around a bit with her unusual purchase, and comes to enjoy it quite a bit, walking around her home with the toys inside her. But this suddenly changes, when her friend, Sandra, is at the front door, hurrying her to get ready for their horse-trip. Amy, completely forgetting about that, has no choice but to go with her hidden friends still inside her… ...