I've had co-workers, upon a woman passing by in the cafeteria, say things like "would you do her?"

I told them "shut the fuck up. You debase yourself by saying shit like that." Look them in the eye, say it with the confidence of the truth you know it is. If HR wants to debate me on cursing my co-workers, I'd be happy to oblige. What are they going to say? Don't tell your coworkers it's wrong to demean women?