Shemale is a term primarily used in sex work to describe a trans woman with male genitalia combined with female secondary sex characteristics, usually including augmented lesbian hentai female breasts, from breast augmentation and/or use of hormones. It is also often mixed with other fetishes in practice, such as voyeurism, denial, etc. In the context of consensual erotic activities, sadism and masochism are not strictly accurate terms; there is a significant difference from the medical or psychological usage of both terms. As with most forms of sexual activity, anal sex participants risk contracting sexually transmitted infections . Especially popular in post-World War 2 Japanese culture. Amateur porn has been called one of the most profitable and long-lasting genres of pornography. Bareback sex is physical sexual activity, especially sexual penetration, without the use of a condom. The name of the practice, when it is done in a repeated in-and-out motion, is derived from its passing resemblance to the dipping of a tea bag into a cup of hot water as a method of brewing tea. Interracial pornographic films have experienced an explosion in popularity, becoming one of the fastest-growing and biggest-selling genres. This category also includes pornographic home movies. In some areas, there are laws stating it is not legally possible to consent to be killed, and elsewhere it may still be legally dubious . Along with the penis, the scrotum is sensitive and considered to be an erogenous zone. Pornography is generally classified as either softcore or hardcore pornography. Participants usually derive pleasure from this, even though many of the gay bear porn practices—such as inflicting pain mature milfs or humiliation or being restrained—would be unpleasant under other circumstances. Partners can engage in penetrative sex, known as full swap, or choose to soft swap in which they engage only in non-penetrative sex. Teacher and Student or Boss and Secretary pornography involves sexualized situations which take place between an authority figure, such as a teacher or boss, and an underling, such as a student or secretary, often fake.