I know "no means no" comes from the right place but it implies that consent is always there and has to be removed.
That isn't true. Consent isn't the default position eg if a woman is too drunk to say no, then it doesn't mean she is saying yes.
So can I ask you to teach your boys that if it isn't an enthusiastic yes then they do not have consent and must stop.
I will be telling my girls that they must give consent, not remove it. Boys/men must be told the same.