both of those words are completely unnecessary to use in a serious manner especially toward a sister or a mother theyre loaded with sexist history and made to make women feel the same way we feel when people yell faggot at us im not opposed to calling my friends bitches in a joking manner but i wouldnt ever call my sister or mother a bitch or a cunt when theyre angry about something there are plenty of other words in the english language to convey my annoyance