We have spent countless hours focused on manners, education, the perils of drugs. We teach them about stranger-danger and making good choices. But recently I've become aware that we must speak to our children about boundaries between the sexes. And what it means to not be a danger to someone else. To that end, we are making an effort to teach our sons about affirmative consent. We explain that the onus is on them to explicitly ask if their partner consents. And we tell them that a shrug or a smile or a sigh won't suffice. They have to hear yes.