Thoughts?

Ladies, I need advice! My boyfriend met my family last night (NYE) for the first time. He fit in great and everybody loved him. In fact, my parents even pulled me aside to tell me they like him he’s great. However, there was a couple little things that sort of embarassed me that he did and I’m not sure if it’s anything to worry about essentially, or he just got really comfortable quickly with my family and also had some beers since it was NYE…

One thing was we were all sitting around playing a game of cards, I was sitting right next to him and I made a move in the game that made him lose that round and he very jokingly said “oooh you bitchhh” but as he said it, his voice slowed down and got quiet towards the end of the word almost like he realized who he was saying it too. He has never disrespected me or called me names or anything in the 4 months we’ve been seeing eachother. My family all got quiet and kinda looked at eachother and his face got red.. no one has said anything to me about it but I feel like they definitely judged. I did not take offense as it was just a game and he was in no way aggressive and was just a simple mistake. But I know it looked bad..

Am I overthinking this?