Sexual roleplay is roleplay that has a strong erotic element.
It may involve two or more people who act out roles in a sexual fantasy and may be a form of foreplay and be sexually arousing.
How seriously the play is taken depends on the people involved, and the scenario may be anywhere from simple and makeshift to detailed and elaborate, complete with costumes and a script.
Nearly any role could become the base material for an erotic experience, and there is no limit to what objects an individual could consider sexual.
It may, for example, involve wearing of a costume which is regarded as erotic, such as a miniskirt and stockings, or one or both partners being nude, say for an evening.
It may involve elements of dominance and submission, passivity or obedience.
It may involve sexual bondage, either being restrained or a sex partner being restrained.
Depending on the play scenario, the roleplay may be before spectators, and bystanders may be unknowing participants in a roleplay.
For example, the roleplay may involve house guests or may be taken out of a couple's home and into, say, a bar, street, park etc.
A role may require, for example, one or both partners to flirt with a stranger, or for one partner to seduce the other partner's friend, etc.
It may also call for one or both partners to, say, strip in a car or park.
The popularity of the Internet has also allowed for online sexual encounters, known as cybersex, which may involve roleplay.
Many of the most common sexual roleplays involve a power differential and form part of the dominance and submission aspect of BDSM.