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.
Pansexual refers to a person who is emotionally, sexually, or romantically attracted to people of all genders. Those who consider themselves as pansexuals are attracted not only to men and women but also to other sexual types that go beyond the standard identified sex. Transsexual men and women are examples of sexual orientation that are typically not classified as either male or female.