A mutual agreement that within defined limits, or subject to a safe word or other restrictions consent to activities is given without foreknowledge of the exact actions planned.
Common for activities such as abduction play or rape play, where the prior discussion would destroy much of the “atmosphere”—like spoiling a surprise party. Also common in long-term relationships where certain activities no longer require explicit consent.
Blanket consent is a mutual agreement that consent will be voluntarily waived. In other words, comprehensive consent is given, ahead of time, for all acts and situations that will arise in the future. Once blanket consent is given, it is generally not revoked.
Blanket consent, as it applies to sexual relationships, is generally used in a BDSM context. It was originally used only in committed relationships, but in recent years has been controversially applied to play sessions as well. Some submissives will wear a collar to show their blanket consent.
Blanket consent is sometimes called consensual non-consent and metaconsent.
Consensual non-consent also called meta-consent and blanket consent is a mutual agreement to be able to act as if consent has been waived. It is an agreement where comprehensive consent is given in advance, with the intent of it being irrevocable under most circumstances. This often occurs without foreknowledge of the exact actions planned.
Consensual non-consent is considered a show of extreme trust and understanding. It is controversial within BDSM circles, even often frowned upon due to concerns about abuse and safety. It is mainly limited to those in Owner/property and 24/7 Master/slave relationships.
In recent years the term has also been used for the practice in play sessions. In the past, the term consensual non-consent was reserved to committed relationships, while the play practice used the umbrella term of edge play. This expanded scope is contentious and the subject of acrimonious debates.
In limited parts of the online BDSM community, “consensual non-consent” is instead used to refer to rape play that includes the use of safe words. This use of the term is commonly frowned upon, especially among total power exchange lifestyle participants. Experienced practitioners of BDSM generally discourage others from using “consensual non-consent” to indicate rape play. This attitude arises from the belief that it is a miscommunication potentially leading to serious and irreparable psychological harm.