A British woman plays a piano designed especially for people who are confined to bed. Date: 1935. (Photo by Mary Evans Picture Library/Caters News)

Two young women embrace in bed together, both wearing white lace underwear. (Photo by Popperfoto/Getty Images)

Coulpe in bed, secret lover hiding. (Photo by Peter Cade/Getty Images)

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

Woman and man playing domination games in bed. (Photo by NDAB Creativity/Rex Features/Shutterstock)

Members of a Star Wars fan club wear costumes of movie characters as they join a midnight premiere of the new Star Wars movie “Star Wars: The Force Awakens” at a cinema in Stuttgart, Germany, late 16 December 2015 night. Numerous fans of the science fiction movie series were gathering to attend one of the midnight premiere screenings all over Germany of the latest movie of the epic series – “Star Wars: The Force Awakens”. (Photo by Nikolai Huland/EPA)

Woman waking up with two men in her bed. (Photo by Ilbusca/Getty Images/iStockphoto)

Sеxy women kissing in bed. (Photo by Sakkmesterke/Getty Images)