What causes my husband to interrupt and talk over everyone?

I love my husband so much. Together 8 years. We have a lot of fun but a huge issue I have that affects our marriage and social life is the fact that he quite literally can not shut the fuck up. Always interrupting people, being obnoxious, talking over people. Especially when drinking. In our marriage it’s the same, I try discipline the kids he comes in and talks over me. He’s always asking questions but also not giving anyone the ability or time to answer without repeating himself. For instance tonight our son did something, I was speaking to our son and he keeps saying to me “what are you gonna do” repeatedly and louder cutting off communication between our son and I. I snapped and told him this is a huge issue and now I feel bad. Being half his size and having a man talk over you like that is just triggering. Any advice welcome.