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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?
- Mark TLv 61 decade agoFavorite 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")
- thinkposeLv 51 decade ago
Same meaning as on traffic signals.