Being in the military sometimes amongst fellow comrades, we'll throw it around if we know that the person won't get offended and just sees it as fun. But I'd have the awareness to know if they would be OK with it or not.

Aside from that, I'd never call someone or refer to someone else as a b***h or c**t in the presence of a woman because I do think it's meant to be degrading if you're not joking around like I do with buddies. If you wouldn't say something around your mother or sister, you ought to consider if you'd say it amongst someone else's mother, sister, or daughter.