Feminist men.

Blag Hag: When Gender Goes Pear-Shaped

If feminist men don't speak out on feminist issues, the only ones left to do so are those rad-fem women who object to sexist language and treatment. I can call a sexist a prick and get away with it because I have one. (I try very hard not to think with it. Long socialization in a family of very strong women.) The women have to be oh-so-careful not to be seen as 'one of them.' Hang in there, you will get flack from both sides but that is the way entrenched mores get changed.

Feminist men have much more clout because we can't be simply dismissed as one of those hysterical women. We can even be polite about it. Simply reminding another man about a poor choice of words by suggesting a better one is frequently as effective as calling him a prick. If not and some men just don't get it either willful sexism or stupidity the fallback is always available.