Mature woman lying on bed, rear view. (Photo by Andersen Ross/Getty Images)

Samurai commiting seppuku (hara-kiri) in Japan, circa 1880. (Photo by adoc-photos/Corbis via Getty Images)

A publican serves a glass of stout to a donkey in the East End of London, 1960s. (Photo by Steve Lewis/Getty Images)

Germany, Business couple making love under desk. (Photo by Roman Maerzinger/Getty Images)

Women in lingerie touching each other. (Photo by BDLM/Getty Images)

Andrea Petkovic of Germany in action against Sara Errani of Italy during day one of the Mutua Madrid Open tennis tournament at the Caja Magica on May 3, 2014 in Madrid, Spain. (Photo by Julian Finney/Getty Images)

A man standing on the first cables during the construction of the Golden Gate Bridge with the Presidio and San Francisco in the background, San Francisco, California, 1935. (Photo by Underwood Archives/Getty Images)

A team of female swimmers wearing facekini pose on beach by the sea on August 18, 2020 in Qingdao, Shandong Province of China. (Photo by Qian Han/VCG via Getty Images)