At boys-only Catholic school we were told very little about sex- a vague warning not to play with yourself was about the lot. But I gathered two facts about the womb from prayers and hymns: that it was usually spotty, and contained fruit.

The Hail Mary contains the line "blessed is the fruit of thy womb, Jesus". Another hymn carolled, "the one spotless womb wherein Jesus was laid". So there you have it.

At age 11 or so, a group of us had a deep theological discussion after hearing that another boy's sister was pregnant. Didn't God KNOW she wasn't married?