Beautiful woman and man playing domination games in bed. (Photo by nd3000/Getty Images)

Women in costumes walk as they participate in Halloween celebrations in the downtown of Seoul, South Korea, October 31, 2015. (Photo by Kim Hong-Ji/Reuters)

A woman in a wedding gown walks to a mass wedding ceremony, held 17 male inmates, in the Carcel Villa Hermosa prison in Cali, Colombia, August 19, 2016. (Photo by Jaime Saldarriaga/Reuters)

The Spanking. (Photo by Vika Valter/Getty Images)

“Sniff out the Appenzell Cheese”. Alexander Hunter, 30, of Greenwich, Conn., took this photo in Appenzell, Switzerland, in September 2014. (Photo by Alexander Hunter)

Savita, a street performer, helps her dog to balance on empty tin containers as they perform at a roadside in Ahmedabad September 7, 2014. (Photo by Amit Dave/Reuters)

London's Regent Street was transformed into a festive wonderland as over 800,000 revellers enjoyed the Hamleys annual Christmas Toy Parade on November 19, 2017 in London, England. (Photo by Tristan Fewings/Getty Images for Hamleys)

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