Sometimes one or more fingers may be inserted into the vagina to stroke its frontal wall where the G-spot may be located. As of 2013, little analysis of this paraphilia has been reported in medical videos porno gay literature. Other objects such as ball point pens and thermometers are sometimes used, although this practice can lead to injury and/or infection. A variant of A2M is ATOM where a performer inserts his penis directly from one recipient anus into a second recipient mouth. If ejaculation is onto the other person face it can be called a facial. It is commonly depicted horny milfs in pornography, but very rarely in mainstream cinema. The original definition of dogging – and which is still a closely related activity – is spying on couples having sex in a car or other public place. BDSM actions can often take place during a specific period of time agreed to by both parties, referred to as play, a scene or a session. The wife who enjoys cuckolding her husband is frequently called a hotwife, or a cuckoldress if the man is more submissive. Double Stuffed , Double Vaginal , or Double Anal pornography involves the penetration of one orifice by two penises or other objects. Pornography is often referred to as porn and a pornographic work as a porno. If this is done using penises and/or strap-on dildos, this is sometimes called the sandwich or BigMac. The phrase is commonly found on porn sites. Women oriented pornography is sometimes referred to as sex positive pornography. Actual hentai sex upskirt or downblouse shots may violate privacy laws in some countries. A male voyeur is commonly labeled Peeping Tom, a term which originates from the Lady Godiva legend. Some may keep their hand stationary while pumping into it with pelvic thrusts in order to simulate the motions of sexual intercourse. Transsexual pornography is a genre of pornography. Examples of heterosexual pornographic film series featuring creampies include Cream Filled Teens and Internal Cumbustion. It is used, for example, at fertility clinics to stimulate sperm donors.