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What does a green light or orange/red light on in someone's window mean?

I've seen this occasionally. Is this a sign of suspicious activity?

2 Answers

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  • Mark T
    Lv 6
    1 decade ago
    Favorite Answer

    Like the other poster, I would guess this is the "traffic light" system - whether for naughty things (drug deals etc) or to indicate that the "other half" is out and feel free to pop in for a bonk :)

    Perhaps a modern version of the packet of OMO in the window.

    (Stood for "Old Man Out")

  • 1 decade ago

    Same meaning as on traffic signals.

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