I have been tickled in unusual situations. The one that comes to mind right now is visiting a previous tailor.
She was an attractive Asian woman who was the best tailor that I ever had. While pinning my suit jackets she would spend a little extra time touching my underarms, ribs, and sides to make sure that she was “getting the perfect fit”. She would “scold” me for moving and laughing and would ask me to stay still while smiling at me. She knew she what was doing and would sometimes ask me if I was ticklish, as if she didn’t know.
Another tailor used to tickle the sides of my feet while she was pinning my pants to get hemmed. I would move around and laugh. She too would tell me to stay still while smiling and commenting on how ticklish I am.