Grapefruit is an artist's book written by Yoko Ono, originally published in 1964. It has become famous as an early example of conceptual art, containing a series of "event scores" that replace the physical work of art -the traditional stock-in-trade of artists – with instructions that an individual may, or may not, wish to enact.
"Grapefruit is one of the monuments of conceptual art of the early 1960s. She has a lyrical, poetic dimension that sets her apart from the other conceptual artists. Her approach to art was only made acceptable when white men like Kosuth and Weiner came in and did virtually the same thing as Yoko, but made them respectable and collectible."