It's just $7.00!

I got the money lecture this morning.  You know the one, we spend more than we make, we have to make some cuts, cut coupons...blah, blah, blah.  This talk happens about once or twice a month when he has to pay bills.  Never fun for anyone.  After he left for work I got a phone call.  Apparently he realized that I had taken the children to McDonald's on Saturday.  Well at this point he let me have it.  We are saving money - he says.  We need to pay off our debt - he says.  I offered to pay him back the $7 that I spent on the Happy Meals and that prompted a nice response (sarcasm).  Anyone else ever get this talk, and or response?  How do you handle it?  Any way to stop the talk from happening?