There has been a lot of discussion over the last couple years about consent, and its centrality in healthy sexual encounters. Affirmative consent has replaced the old no-means-no model as the gold standard, although some have been critical about the way that it's been implemented as university policy, particularly in the US.
UBC has taken a very clever approach to raising awareness about affirmative consent, while also providing what could be a helpful tool. It's based on a set of emojis that can be texted to potential partners (link):
They also provided a fantastic consent cheat sheet:
