Realizing that herein, you're preaching to the the choir. I doubt anyone would suggest that clothing obviates the right to say no.

The statement about teaching safewords to vanillas would be an asset save that sex education, when it's allowed, rarely (ever?) includes anything more than an anatomy lesson. How are we helping anyone understand their urges, motivations, and consideration of others with anatomy lessons? Does "No means no" even appear in the curriculum? ...or is it merely a billboard motto. I doubt it, (realizing it's been a long time since I was in a sex-ed class.)