Bump-and-grinders is a colloquial term that refers to people who dance provocatively, with a lot of body contact. This term is often used in a derogatory manner, particularly towards women who engage in this type of dancing. Several synonyms exist for this term, including "dirty dancers," "grinders," "booty shakers," and "hip rollers." While these terms may also carry negative connotations, they are generally less offensive than bump-and-grinders. It's important to remember that everyone has their own preferences for how they want to dance and express themselves, and it's important to respect those preferences, regardless of how they might seem to others.