Clitoris stimulation with a pen? I think is nonsense

I read somewhere on the net that calligraphy pens are ideal for clitoral stimulation..because they are flexible and can be opened..I don't think I'll try it, it seems too bdsm to me! I prefer more soft and erotic excitement..i always thought that slow writing is sexy https://www.youtube.com/watch?v=7BiNZqHwHj4&t=673s