(one's) lord and master

Someone who has total power over one. Used to humorously exaggerated effect, usually in reference to one's spouse. I'd like to hang out with you guys, but I need to go into town to pick a few things up for my lord and master. A: "Hey Chad, will your lord and master let you play cards with us on Friday night?" B: "Very funny. But I do have to check with her." With that wedding ring on your finger comes your lord and master—I hope you're ready for that.