my hubs is the one v rude to his family, particularly his mother but also because my MIL is quite a pain in the a** so he has no patience when talking to her. when needed, I will ask my hubs to lower his volume and talk nicely to his mother. as for me, lol I'm the "fiercer" one, I will "slap" his mouth if he talks to me loosely 😅 but I think u should let him know and have a chat over this issue. communication is key.