Comic books often featured characters being tied up and tying others up, particularly in damsel in distress plots. This category also includes pornographic home movies. The buttocks in human females thus contain more adipose tissue than in males, especially after puberty. Creampie scenes depart from heterosexual pornographic convention in favor of a depiction that more closely mimics sexual intercourse as performed in ordinary life; they have been called the counterimage of facials. Women porn is often produced by women and aimed specifically at the female market - rejecting the view that men are turned on by porn but women only by a box of chocolates. Emetophilia pornography involving vomiting and gagging. Celebrity sex tapes are amateur or professionally-made recordings of sex acts, as performed by a celebrity and their partner. Sadomasochism does not imply enjoyment through causing or receiving pain in other situations . Bottom and submissive are widely recognized terms for those partner in the relationship or activity who are, respectively, the physically receptive or controlled participants. Bisexual DVDs sell much better online than in adult video stores, possibly due to gaysex customers in stores feeling embarrassed to buy them. It is mutual consent that makes a clear legal and ethical distinction between BDSM and such crimes as sexual assault or domestic violence. It is commonly depicted in pornography, but very rarely in mainstream cinema. Since development and pronunciation of the buttocks begins at menarche and declines with age, hentai porn full buttocks are also a symbol of youth. Interracial pornography typically employs ethnic and racial stereotypes in its depiction of performers and many of interracial pornographic films still include racial stereotypes, although the segregation momsex of actors by race has diminished considerably. Incest pornography can feature actual relatives, but the main type of this pornography simply uses actors of similar looks to suggest family relationship.