The site that Ophelia Benson links to (and the posters are better displayed on her site, IMO) has some awesome posters challenging sexist language.

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Backbone Zone | Butterflies and Wheels
I'd still like to be able to understand how 'bitch' got to be a pejorative in the first place. I gather that it's got something to do with dogs not be as well regarded back in the day, not that I know…

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