mansplainer

a man who explains something to a woman in a very simple way, because she is a woman

Example Sentences:

My ex-boyfriend was such a mansplainer, he used to always tell me how to fix my computer. Just because I am a woman, doesn’t mean I don’t know how to fix my computer.

The mansplainer very rudely gave my female friend some driving tips.

Media and Links:

Five tips for the mansplainers in your life

Similar idioms:

1. someone does not have a life