It means to act mysterious. Get out of the house. ASAP if you can. Act like it was planned. Dress nice. Smell nice. Look like a million bucks and don't tell W where you're going. We don't care if you're just driving - or sitting in a park - for an hour. If W asks you where you're going, just smile and say, "Out with friends. I'll be back later."
Don't fool her. Actually go somewhere or participate in event(s) where you should look that nice.
