That the act of sex is a legal and binding contractual agreement between two people?

Did you also know that no one can enter into a legally binding contract is they are legally intoxicated, or "shit faced" as it were?

Therefore, by the definition of legal terminology, you have violated the consensuality of the BDSM relationship by engaging in the activity in which you practiced. Also, by a loose definition of legal terminology, you have comitted rape.

That is why my ONLY response to this question will ever be "Don't do it."