It happens to men too though. There are arrogant colleagues I have to stop when they explain things to me I already know. And I didn't even ask for it. I don't know if they just think that everyone besides them is an idiot or if they just like to show off.
On the other side, I am maybe a bit too conscious about these things. Sometimes it is very hard to judge someones skill level. There are a lot of people who somehow manage as programmers without knowing even the most basic things. I find it often hard to explain these basic things to them without seeming like an arrogant showoff.