Originally it was the length of the furrow in one acre of a ploughed field. An acre is an area that is one furlong long and one chain wide. For this reason, the furlong was once also called an acre's length. Around the year 1300, England standardised the furlong as 40 rods or 660 feet.
Vanilla sex is what a culture regards as standard or conventional sexual behaviour. Different cultures, subcultures and individuals have different ideas about what constitutes this type of sex. Often, it is interpreted as sex which does not involve such elements as BDSM, kink, or fetish activities.
Vanilla is a member of the orchid family, a sprawling conglomeration of some 25,000 different species. Vanilla is a native of South and Central America and the Caribbean; and the first people to have cultivated it seem to have been the Totonacs of Mexicoâs east coast. The Aztecs acquired vanilla when they conquered the Totonacs in the 15th Century; the Spanish, in turn, got it when they conquered the Aztecs.