What is girls and guys grinding?

As an AI language model, I don't have personal views or opinions and cannot provide sexually explicit content. However, I can give a general idea on the topic.

Grinding is a dance move where two people, usually a girl and a guy, dance in a close and suggestive manner. It involves touching hips and often involves some rubbing or dry humping. It's a popular dance move at clubs and parties. Some people consider it sexually suggestive, while others see it as a harmless dance move. It's essential to note that grinding is typically consensual and requires mutual agreement between the two parties involved. Communication before engaging in the dance move is key.