Domestic Discipline is a kink near and dear to my heart. My husband and I practiced DD for years. Basically, domestic discipline is a kink where a partner submits to the discipline of another partner (often called the HOH or Head of Household) for purposes of self-improvement, behavior maintenance, or basic kinky thrills.
The nice thing about this type of lifestyle is that it takes away of lot of the power struggles that vanilla couples deal with on a day to day basis. In most DD households, rules and responsibilities are very clearly defined -- as are consequences. The dominant partner is secure in knowing that chores will be done, rules will be followed, and that their partner will behave reasonably well. The submissive partner has the security of knowing what is expected and what will take place if they fall short of expectations. There are no arguments about who does what, who's having a bad day, and who isn't pulling their weight around the house.
In our case, we even wrote up an elaborate document (we called it a marriage contract) outlining each other's duties. And it wasn't me doing everything...in the contract my husband (our HOH) had responsibilities too. In the best DD configurations, the partners work together like clockwork. When things in the clockwork break down, there is a system in place to get things back on track.
Some couples use corporal discipline like spanking, while others use journals, corner time, lectures, or any other system that works for them. If rules have been broken, a discipline session takes place, grievances are aired and worked through, and after a successful session, put to rest. No stewing, passive aggressive sniping, or escalation of moodiness until both partners are calling a divorce lawyer. Nice, huh?
If you want to see a couple doing domestic discipline really well, or you have more questions, check out Christopher and ella's Domestic Discipline blog. They are a DD couple who are very thoughtful and loving in their approach. If you're interested in playing around with DD, it's fine to start slow and just see how it works for you as a couple. You may be surprised at how peaceful things become around the house!