How do I explain to my husband that I don't like the things he said

I was out with my kids. He's technically my kids step dad but he help me raise both of them. My daughter was 3 and son was 5. Now they are 14 and 12. We were out eating and some teenage girls were sitting in front of us and he said "Man. Parents let their daughter's dress like thots now a days! No wonder there's so much rape in our country." And the girls turned around and heard him! They didn't say anything. Just turned around. He told my daughter "Hope you never become a thot." And told my son "Hope you never bring home a thot." I told him let's change the subject and my son wasn't even paying attention to him. He was looking at the boys soccer team that was next to us from the high school. I honestly always had a feeling my son wasn't into girls or at least bi. Me and my husband have already spoken about that but he turned our son's head to face the girls he was talking about and told my son "Nevermind. Pay attention to the thotty teens." I don't like that and I'm a person that wants to express my feelings. I just have a hard time doing it. How can I explain to him that I don't like the things he said.