Yaoi is anime or manga that features gay males . Pornography may fall into more than one genre. Certain websites have begun providing bondage naked milf videos and photographs featuring the kidnapping roleplay, which has been largely the hallmark of detective style bondage magazines. Cum shots typically do not appear in girl-girl scenes and orgasm is normally implied by utterances, cinematic conventions, or body movement. Types of anal sex can also be a part of lesbian sexual practices. Sometimes one or more fingers may be inserted into the vagina to stroke its frontal wall where the G-spot may be located. The term is typically used by the cinematographer within the narrative framework of a pornographic film, and since the 1970s has become a leitmotif of the hardcore genre. Contrary to the other two types, B/D does not define the Tops and Bottoms itself, and is used to describe the general activities with either partner being the receiver and the giver. Solo performances in gay pornography gay boy porn have been described in 1985 as either or both active and/or passive , whereas female solo performances are celebrity nudes said to be exclusively passive . Hardcore pornography is pornography that depicts penetration or extreme fetish acts, or both. Bukkake is a sex act portrayed in pornographic films, in which several men ejaculate on a woman, or another man. Bear features a combination of middle-aged, hairy or overweight males. Since mammary intercourse is a non-penetrative sex act, the risk of passing a sexually transmitted infection that requires direct contact between the mucous membranes and pre-ejaculate or semen is greatly reduced. Group sex most commonly takes place in a private sex party or semi-public swinger gathering, but may also take place at massage parlors or brothels or, in some jurisdictions, at purpose-built locations such as sex clubs. It is typically animated pornography, as the legal age to be featured in a pornographic hentai sex film in naked celebrities Japan is 18. Works in this genre may be considered adult for any number of reasons.