It doesn't make long before the teacher makes the mistake of saying:
"...and so it's important to communicate with your partner -- yes, Zahara?"
"Or partners," Zahara volunteers cheerfully.
"Thank you, Zahara. It's important to communicate with your partner or partners about STIs. As we saw on the previous slide, not everyone who has an STI will show symptoms, so even if neither of you -- yes, Zahara, or none of you -- believe you have an STI, it's important to disclose your sexual history and beware of the possibility of passing on an STI contracted from a previous partner -- what is it now, Zahara?"
"Or current partner!" Zahara says brightly, hand in the air again.
"Zahara, I appreciate your enthusiasm, but polygamous relationships are not the focus of today's lesson."
"Polyamorous," Zahara corrects him helpfully. "Unless we're talking specifically about, like, Mormons, then it's polygamous. And it's not just a language issue! While some polyamorous relationships are a closed complete graph, in which all the members are in a relationship with all the other members and none are seeking new partners, many people in polyamorous relationships are open to or actively seeking new partners, who may or may not be involved with the other members of the relationship. So it's important for them to keep in mind that this can't be a one-time conversation at the beginning of a sexual relationship, but rather an ongoing conversation, since any of them or any of their partners might acquire new partners at any time, thus presenting a new source of risk for STI transmission."
It takes the teacher a second. "...If you want to discuss this further, Zahara, why don't you talk to me after class."
Zahara smiles at him brilliantly.