This is so-called the butterfly sex position.
The Butterfly sex position actually the basic sex position as we known as missionary position. The key here, is that the woman lies face up on a bed or couch, with her ass on the edge, and the man stands or kneels on the floor and penetrates her.
Their torsos forms a right angle. The male, may lift the girl’s hindquarters freely, and the girl may spread her legs wide apart, or wrap around the guy, or straighten up and prop on the guy’s shoulders. This position is called butterfly presumably because when the girl’s legs are wide apart, and when the pumping is active, her legs simulate the movements of the wings of a butterfly.
The missionary position or butterfly sex position is generally a sex position in which a woman lies on her back and a man lies on top of her while they face each other and engage in sexual intercourse or other sexual activity. Though commonly associated with heterosexual sexual activity, the sex position is also used by gay and lesbian couples.
The butterfly sex position or missionary position may involve sexual penetration or non-penetrative sex (for example, intercrural sex), and its penile-vaginal aspect is an example of ventro-ventral (front-to-front) reproductive activity. Variations of the position allow varying degrees of vaginal tightness, clitoral stimulation, depth of penetration, participation on the part of the woman, and the likelihood and speed of orgasm.
It is commonly believed that the term missionary position arose in connection to Christian missionaries, who supposedly encouraged the sexual position to new converts in the colonial era. However, the term probably originated from Alfred Kinsey’s Sexual Behavior in the Human Male through a confluence of misunderstandings and misinterpretations of historical documents. Tuscans refer to the position as the Angelic position while some Arabic-speaking groups call it the manner of serpents.
The missionary position is often preferred by couples who enjoy its romantic qualities afforded by copious skin-to-skin contact and opportunities to look into each other’s eyes and kiss and caress each other. The position is also believed to be a good position for reproduction. During sexual activity, the missionary position allows the man to take charge of the rhythm and depth of pelvic thrusting.
It is also possible for the woman to thrust against him by moving her hips or pushing her feet against the bed, or squeeze him closer with her arms or legs. The position is less suitable for late stages of pregnancy, or when it is desired for the woman to have greater control over rhythm and depth of penetration.
Though there are a number of variations and adoptions of the missionary position, the classic missionary position involves a man and a woman, with the woman lying on her back and the man on top. Variations in the positions may vary the angle and depth of penile penetration.
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