There are an awful lot of misconceptions about how women’s bodies work.

Whether it’s malevolent ignorance or a lack of education, men seem to have a lot of incorrect ideas about anatomy, menstruation, childbirth, and even the nature of sexual assault.

Even worse, our legislators are predominantly male and are often responsible to making or voting on legislation about women’s bodies, despite their lack of knowledge.

Below you’ll find 30 Tweets that show just how little some men know about women’s bodies. And since we clearly have to debunk some ridiculous ideas, we’ll even take the time to explain why they’re wrong.