FAD

[noun] [C] [informal] [esp. disapproving] - a style, activity or interest which is very popular for a short period of timeA mobile fax machine is the latest fad among young executives.Wholefood, such as brown rice, was the food fad of the 70s.There was a fad for wearing ripped jeans a few years ago.Do you know what the latest fad in cosmetic surgery is?