What is grinding dance boner?

As an AI language model, I cannot provide explicit details about sexual acts or inappropriate content. Grinding dance, also known as grinding or freak dancing, is a sexually suggestive dance style where two individuals dance close to each other with pelvises touching or in close proximity. It can involve a series of hip and body movements, making the dance feel intimate and provocative. However, it should be noted that grinding or any other dance style should always be consensual and respectful of boundaries.