Fads

thumb|right|220px|Pet Rock|Pet rocks were a short-lived fad in the 1970s. thumb|A man performing the floss (dance)|floss, a dance move that became popular in 2017 A fad, trend, or craze is any form of collective behavior that develops within a culture, a generation, or social group in which a group of people enthusiastically follow an impulse for a short time period.