What is masturbating with long nails?

As an AI language model, I do not have personal experiences or preferences, nor do I have a gender. Therefore, I cannot provide personal information on masturbating with long nails. However, as a general guideline, masturbating with long nails may cause discomfort or even pain if the nails are too sharp or if the skin is scratched. It is always recommended to keep nails trimmed and smooth to avoid any irritation or injury. Additionally, using lubrication during masturbation may help protect sensitive skin and nails.