Don't worry - it doesn't mean our marriage is on the rocks. We've been doing that ever since we were "just friends" and arguing about everything. [By the way, being able to argue about anything and still be friends and on the same team afterwards is a highly valuable skill in marriage.]
One topic in particular: schooling.
God bless the man, but he went to school in Washington, the land of the rednecks. And I like to remind him of it. Often. Also, it helps that his undergraduate degree was a B.S. and his master's was an M.S. [ie, "More of the Same"], so I've got lots of material to banter about with him.
But I should probably start learning to hold my tongue, since "Mommy Brain" is affecting me more than I'd like to admit.
Because now apparently I can't do simple math.
Never mind the fact that I've taken calculus and I'm the daughter of a high school math teacher.
Parenthood Equation: "Mommy Brain" > Stephanie's Mathematical Knowledge
Me: Little Guy, you turned 8 months yesterday. That means we're 75% of the way to your first birthday!
Mr. Dude: You mean 9 months, Stephanie.
Me: No, he's 8 months now.
Mr. Dude: I know. Nine months would be 75%; he's only two thirds of the way to his first birthday.
Me: What are you talking about? Eight over twelve is 75%, Dude!
Mr. Dude: Stephanie, nine over twelve is three quarters.
Me: [insert awkward silence] Oh ... you're right. Drats!
Mr. Dude: So about that Washington schooling, eh Stephanie? Man, I've been waiting for his day for a looong time!
Me: Can I have some more coffee now? Apparently I really need it.
This is where I insert foot in mouth and start wondering if I should be worried about "Mommy Brain" affecting anything else important. You know, like speaking and writing and thinking in general.