Grinding is the act of two individuals rubbing hips together in a rhythmic motion. It is similar to dry humping, but is less sexual. It is often done on dance floors or other public or semi-public places. Typically, the term refers to erotic contact while both participants are fully clothed.
Grinding can also refer to masturbation performed in a similar way. In this case the participant is clothed and grinding against an object like a pillow or couch.
Although direct contact of the genitals never occurs, it is entirely possible to orgasm through grinding.
More About Grinding
Grinding can be done where the individuals are facing one another or in a spooning position where one partner’s front is pressed against the back of the other. It can be done during foreplay or by those who abstain from sexual intercourse, but are not opposed to heavy petting activities.
While grinding is often considered an act for horny teenagers, any act that derives sexual pleasure can be used by people of all ages. Grinding is a good way to stimulate the clitoris, so many people find it pleasurable far beyond their teen years.