That's the thing...with women that if you tell them the truth, being all white knight, trusting that she'd understand you. Don't tell them anything when they go digging. Put up that wall nice and high, and don't try to be witty, or fire out a glib answer....that's just cracking under pressure. Take it to the grave.
I like the one with whipping out the calculator....smart. Chicks don't like reason and logic.