Something weird
... is, while sitting in your house, inadvertently making eye contact with someone who is walking by your window. You both look at each other for a long second, and then you both look away in a vain effort to pretend that you haven't seen one another, because if you've seen each other, then the person outside has to acknowledge that they were looking into the house, and the person inside has to acknowledge that they were watching someone walk down the street, and somehow you both feel voyeuristic and slightly violated at the same time.

Of course, after feigning ignorance, you will both sneak looks at each other again to verify you are no longer being spied upon, thereby defeating the elaborate little social illusion you're trying to create. Probably you would both feel less stupid if you just smiled and waved the first time instead of pretending you weren't staring at each other as though you'd never seen a person before. Who knew there were so many rules about where it's acceptable to aimlessly look? They should write these things up in etiquette books, for cripes' sake.

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