At the grassroots level, local club cricket is essentially an amateur pastime for those involved but still usually involves teams playing in competitions at weekends or in the evening. Schools cricket, first known in southern England in the 17th century, has a similar scenario and both are widely played in the countries where cricket is popular. Although there can be variations in game format, compared with professional cricket, the Laws are always observed and club/school matches are therefore formal and competitive events. The sport has numerous informal variants such as French cricket.
The captain is often the most experienced player in the team, certainly the most tactically astute, and can possess any of the main skillsets as a batsman, a bowler or a wicket-keeper. Within the Laws, the captain has certain responsibilities in terms of nominating his players to the umpires before the match and ensuring that his players conduct themselves "within the spirit and traditions of the game as well as within the Laws".
Cricket has had a broad impact on popular culture, both in the Commonwealth of Nations and elsewhere. It has, for example, influenced the lexicon of these nations, especially the English language, with various phrases such as "that's not cricket" (that's unfair), "had a good innings" (lived a long life) and "sticky wicket". "On a sticky wicket" (aka "sticky dog" or "glue pot") is a metaphor used to describe a difficult circumstance. It originated as a term for difficult batting conditions in cricket, caused by a damp and soft pitch.
In 1975, Dr. William H. Cade discovered that the parasitic tachinid fly Ormia ochracea is attracted to the song of the cricket, and uses it to locate the male to deposit her larvae on him. It was the first known example of a natural enemy that locates its host or prey using the mating signal. Since then, many species of crickets have been found to be carrying the same parasitic fly, or related species. In response to this selective pressure, a mutation leaving males unable to chirp was observed amongst a population of Teleogryllus oceanicus on the Hawaiian island of Kauai, enabling these crickets to elude their parasitoid predators. A different mutation with the same effect was also discovered on the neighboring island of Oahu (ca. 100 miles (160 km) away). Recently, new "purring" males of the same species in Hawaii are able to produce a novel auditory sexual signal that can be used to attract females while greatly reducing the likelihood of parasitoid attack from the fly.
Crickets have from time to time appeared in poetry. William Wordsworth's 1805 poem The Cottager to Her Infant includes the couplet "The kitten sleeps upon the hearth, The crickets long have ceased their mirth". John Keats's 1819 poem Ode to Autumn includes the lines "Hedge-crickets sing; and now with treble soft / The redbreast whistles from a garden-croft". The Chinese Tang dynasty poet Du Fu (712–770) wrote a poem that in the translation by J. P. Seaton begins "House cricket ... Trifling thing. And yet how his mournful song moves us. Out in the grass his cry was a tremble, But now, he trills beneath our bed, to share his sorrow."