Finally, we want to talk about one of the most awkward conversations there can be - the one about sex, which means this next segment needs a warning that we're about to hear a frank talk about sex and consent.

It's a topic that sex educator Erin Chen thinks we need to be more blase about.

It's actually an approach she learned from her middle school sex ed teacher.

Here she is on the TEDx stage in 2017.

Miss Marzielli had just taught the school curriculum for sex ed, which is basically STIs, STIs, this is what a condom looks like.

And to wrap up the unit, she handed out these white pieces of paper, and she told us we can ask any other questions we had.

She told us we can ask anything we wanted.

Well, I remember when she started reading out those questions, the entire room just took a collective breath, and we waited for her reactions.

When she knew the answer, she answered it.

And when she didn't, or more like I suspect, didn't know how to answer the question, she simply looked up and calmly said, I'm going to find out and come back to you tomorrow.