Bumping and grinding is kind of a play it by ear kind of thing. It would usually start with a man dancing really up close on a woman and both of them rubbing body parts on each other. What you want to do is dance really up close on your man with your booty bouncing and grinding all over his umm ‘privates’. It works best if he has his hands on your hips and guides your booty where he wants it to go. Go ahead and work it!