"Honey I need $120 out of our discretionary fund."
"I need a new pair of boots for works."
"They reimburse you for those don't they?"
"Only $100 of it, but I always put it back into our account."
"That's right well if you need them you need them, just make sure you put it back in."
Some may wonder why I refer to it as "our" money and not "Her" money. While my wife is most certainly the boss, and has final say over how the money is spent, we both agree that my keeping the books is the best way for her to mange our marriage. What happens is that I make sure all bills are paid on time, this includes retirement savings, what's left is up to my wife to decide how it is spent. We go over all of the paper work together, she having already looked at the bank statements, to check on my activity.
Another reason I use "our" is that it fosters a since of ownership in the relationship. The same way employees refer to there store, or office when in reality its more the property of the shareholders, or the children of the founders. A since of ownership is important as it increases loyalty, if you don't believe that just ask any sports fan about their team.
Finally as a practical measure if something were to ever happen to my wife it may prove crucial that I have access to all of our funds. While many a submissive man may fantasize about complete financial domination this is horribly unpractical. What they may not understand is that if all assets are in their wife's name, and she were to pass away suddenly it could take months for probate to be worked out especially if she did not leave a will that stipulates her husband is to inherit her possessions. These problems can be compounded if there are children from previous marriage.