Top, bottom and versatile

In human sexuality, top, bottom and versatile are sex positions during sexual activity, especially between two men. A top is usually a person who penetrates, a bottom is usually one who receives penetration, and a versatile engages in both activities or is open to engaging in either activity. These terms may be elements of self-identity that indicate an individual's usual preference, but might also describe broader social, psychological, or sexual identities.

Top, bottom and versatile are also used in BDSM to describe similar—but distinct—BDSM identities and practices.

Top

A top is usually a person who engages in the penetrative role during sexual activity; for men who have sex with men (MSMs), this often involves penetration using the penis during anal or oral sex.Top is also used as a verb meaning "to penetrate another." Top may also describe a broader personal identity involving dominance in a romantic or sexual relationship; however, this stipulation is not a requisite element of being a top.

Top

A top is a toy designed to be spun rapidly on the ground, the motion of which causes it to remain precisely balanced on its tip because of inertia. Such toys have existed since antiquity. Traditionally tops were constructed of wood, sometimes with an iron tip, and would be set in motion by aid of a string or rope coiled around its axis which, when pulled quickly, caused a rapid unwinding that would set the top in motion. Today they are often built of plastic, and modern materials and manufacturing processes allow tops to be constructed with such precise balance that they can be set in motion by a simple twist of the fingers and twirl of the wrist without need for string or rope.

Characteristics

The motion of a top is produced in the most simple forms by twirling the stem using the fingers. More sophisticated tops are spun by holding the axis firmly while pulling a string or twisting a stick or pushing an auger. In the kinds with an auger, an internal weight rotates, producing an overall circular motion. Some tops can be thrown, while firmly grasping a string that had been tightly wound around the stem, and the centrifugal force generated by the unwinding motion of the string will set them spinning upon touching ground.

Top (clothing)

A top is clothing that covers at least the chest, but which usually covers most of the upper human body between the neck and the waistline. The bottom of tops can be as short as mid-torso, or as long as mid-thigh. Men's tops are generally paired with pants, and women's with pants or skirts. Common types of tops are t-shirts, blouses and shirts.

Design

The neckline is the highest line of the top, and may be as high as a head-covering hood, or as low as the waistline or bottom hem of the top. A top may be worn loose or tight around the bust or waist, and may have sleeves or shoulder straps, spaghetti straps (noodle straps), or may be strapless. The back may be covered or bare. Tops may have straps around the waist or neck, or over the shoulders.

Types

Neck styles

See also

References

External links

Category of topological spaces

In mathematics, the category of topological spaces, often denoted Top, is the category whose objects are topological spaces and whose morphisms are continuous maps or some other variant; for example, objects are often assumed to be compactly generated. This is a category because the composition of two continuous maps is again continuous. The study of Top and of properties of topological spaces using the techniques of category theory is known as categorical topology.

N.B. Some authors use the name Top for the category with topological manifolds as objects and continuous maps as morphisms.

As a concrete category

Like many categories, the category Top is a concrete category (also known as a construct), meaning its objects are sets with additional structure (i.e. topologies) and its morphisms are functions preserving this structure. There is a natural forgetful functor

to the category of sets which assigns to each topological space the underlying set and to each continuous map the underlying function.

Sexual intercourse

Sexual intercourse, or coitus or copulation, is principally the insertion and thrusting of the penis, usually when erect, into the vagina for sexual pleasure, reproduction, or both. This is also known as vaginal intercourse or vaginal sex. Other forms of penetrative sexual intercourse include anal sex (penetration of the anus by the penis), oral sex (penetration of the mouth by the penis or oral penetration of the female genitalia), fingering (sexual penetration by the fingers), and penetration by use of a dildo (especially a strap-on dildo). These activities involve physical intimacy between two or more individuals and are usually used among humans solely for physical or emotional pleasure and commonly contribute to human bonding.

A variety of views concern what constitutes sexual intercourse or other sexual activity, which can also impact views on sexual health. Although the term sexual intercourse, particularly the variant coitus, generally denotes penile-vaginal penetration and the possibility of creating offspring, it also commonly denotes penetrative oral sex and penile-anal sex, particularly the latter. It is usually defined by sexual penetration, while non-penetrative sex acts, such as non-penetrative forms of cunnilingus or mutual masturbation, have been termed outercourse. Non-penetrative sex acts, however, may additionally be considered sexual intercourse. The term sex, often a shorthand for sexual intercourse, can mean any form of sexual activity. Because people can be at risk of contracting sexually transmitted infections during sexual activities, though the transmission risk is significantly reduced during non-penetrative sex,safe sex practices are advised.

Sex (The 1975 song)

"Sex" is a song by English indie rock band The 1975, originally included as the third track on their second extended play of the same name, Sex. It was released as a single on 19 November 2012. The song was released to modern rock radio in the United States as a single in promotion of the EP on 5 March 2013, peaking at number 35 on the Billboard Alternative Songs chart. It also peaked at number 23 on the UK Indie Chart.

"Sex" was re-recorded by the band in 2013 for their debut studio album The 1975, in which it was included as the fifth track on the album. On 8 July 2013, the album version of the song premiered on Zane Lowe's BBC Radio 1 show as his "Hottest Record in the World". It was released as a digital single on 23 August 2013 and debuted at number 34 on the UK Singles Chart on 1 September.

Music videos

An official music video for the EP version of "Sex", shot in black-and-white, was uploaded to YouTube on 5 October 2012. On 26 July 2013, a music video for the album version of the song was released, noteworthy for being the band's first music video to be rendered in color.

Sex (The Necks album)

Sex is the debut album by Australian improvised music trio, The Necks, originally released on the Spiral Scratch label and later rereleased on Fish of Milk and Private Music in the US. The album features a single track of just under an hour in length performed by Chris Abrahams, Lloyd Swanton and Tony Buck improvising over a two-bar motif. On this album the band overdubbed the instrumentation of piano, bass and drums in a dual take creating a "hypnotic repetitive piece".

The album is also an early example of the CD format being used to expand the length of recorded performances with one reviewer noting that "time limitations and format restrictions of cassettes, vinyl, and the obtuse eight-track would have meant that their work could only be experienced live".

Excerpts from Sex have been used as the theme music on Dan Bodah's Airborne Event show on the WFMU freeform radio station.

Personnel

References