Double penetration? , you need to know this

The double penetration or double penetration, DP often called, is a sexual practice that involves two people simultaneously penetrate third. In the event that the person penetrated is a woman, it is usual that the double penetration is performed by the vaginal opening and the anus. It is a common practice in the world of porno.

Penetration can be done not only with the penis, but with different body parts (hands, fingers) or specific sex toys.

It may be called or double penetration sandwich. Receive the latter name, because even though the two men's penises do not touch, the wall that separates the vagina from the rectum is very thin.
The first double penetration filmed the story appears in 1970 in the film "Delphia the Greek" director Lasse Braun.The rectal mucosa is fragile and susceptible to infection by viruses and bacteria. The mucosa absorbs substances deposited in the rectum phenomenon exploited for drug administration as in the case of suppositories. This absorption can be increased by deep penetration unintentionally, which can cause small wounds and lead to micro hemorrhages. Therefore, it is a fertile ground for the spread of STDs (sexually transmitted diseases), whether viral and HIV (human immunodeficiency virus), the human papillomavirus (HPV), hepatitis (except for hepatitis A) the herpes cause genital and other bacterial as gonorrhea and syphilis, even if there is no ejaculation. Therefore it is always advised practice anal sex using a condom.

There should be practiced vaginal intercourse or fellatio after anal sex without prior washing the penis with soap and plenty of water. It thus avoid possible infection in the female genitals or in the mouth by bacteria flora rectum

In the double penetration is recommended prior preparation of the sphincters by gradual dilation combined with the use of lubricants