First, don't refer to anything as 'lady parts.' Besides sounding kind of creepily childish, 'lady parts' sounds like they are removable pieces we can leave at home, which would be super comvenient, but also undermines the fact that we are whole human beings. Just us le the actual words. Nobody is offended by 'breasts.'

Ok, second, speak up when men or women say sexist shit. Just disagree or say that what they said is sexist. Rinse and repeat.

Third, get out of the way. Women are the only experts on what it means to be female. Resist the urge to chime in when you aren't asked on discussions of the female experience. Recognize and accept that you literally don't know and will never know what it is like to experience the kind of discrimination women experience. Resist the urge to say something along the lines of "i was treated unfairly once so i know what it's like" because A) no, you don't: and B) you aren't adding anything to the discussion. You can use your experiences of discrimination and injustice to enpathize with women, and you should share that with other men so they can try to empathize too, but women are really bored with having to pat men on the back and say, "that's nice" when they invariably throw their irrelevant two cents in.

Lastly, strike "not all men" from your vocabulary. Seriously. Thank you.

Sincerely, an exhausted feminist.