I don't know if any of you read the Xanth novels by Piers Anthony, but in ROC AND A HARD PLACE there is a brief tickling scene. First, if you don't know anything about Xanth, it's a fantasy land & most residents have a magic talent, such as levitation, being able to find anything, shape shifting, etc...you get the idea. Anyway, here's the paragraph:
A mischievously smiling young woman appeared. "I am Nine Line. My talent is to tickle at a distance." She gestured with her hands, and suddenly Metria exploded into helpless laughter, because she was being teribly tickled. She had to form a layer of impervious shellac all over her body before she was able to withstand it. Then the tickle started in her throat, making her cough.
A mischievously smiling young woman appeared. "I am Nine Line. My talent is to tickle at a distance." She gestured with her hands, and suddenly Metria exploded into helpless laughter, because she was being teribly tickled. She had to form a layer of impervious shellac all over her body before she was able to withstand it. Then the tickle started in her throat, making her cough.