conversations at work, part 3 million

Do you think you're good at expressing yourself in English? Try this sometime: Being asked by your male Indian coworker to explain some stuff associated with female menstruation. Using explicit sex terms is right out both because we're at work and because I don't think they would make it across the language barrier. It's also somewhat awkward due to me being female and him being male; menstruation is not a normal topic of conversation, so my natural inclination is to use more indirect language. But English is his second language and there's a lot of terms that would require further explanation. So my challenge was to come up with a G-rated and indirect explanation of one of the more intimate aspects of female anatomy, using the simplest language possible.

( My attempt - probably a bit TMI for those uncomfortable with the idea of menstruating )

I think 90% of these conversations are spurred by the fact that part of our job is to tidy the shelves containing the condoms and feminine hygiene stuff. The rest being supplied by the woeful lack of sex education my coworkers received in their home countries.