The fruit test is a test that is performed to test whether or not someone is gay.
And the fruit test also known as the "fruit machine" was a device that was developed in Canada by Frank Robert Wake, a psychology professor with Carleton University in the 1950s that was supposed to be able to identify gay men (derogatorily referred to as "fruits").
The word and slang fruit for gay is derived from the expression "nutty as a fruitcake", which was first recorded in 1935.
A nut can be either a seed or a fruit.
By the 1930s both fruit and fruitcake terms are seen as not only negative but also to mean male homosexual, although probably not universally.
Fruit is an offensive, derogatory word for a gay man, or a male homosexual.
Gay is a term that primarily refers to a homosexual person or the trait of being homosexual.
The term originally meant 'carefree', 'cheerful', or 'bright and showy'.
While scant usage referring to male homosexuality dates to the late 19th century, that meaning became increasingly common by the mid-20th century.
Other forms: heterosexuals; heterosexually.
A heterosexual person is attracted to people of the opposite sex.