The friday night dinner is a semi-monthly secret dinner in the San Francisco Bay area that is attended by many academics, researchers, authors, and others involved in the psychedelic drug community. The dinners are potluck dinners organized by a mailing list, and are known for short as the "fnd". Admission to new people is on a selective basis, current members may invite new people they feel they can trust. Drug use is explicitly forbidden at the dinners.