Top Definition
a traffic light that has been green for a long while so you know any second it is going to turn yellow so be ready
better get ready to slow down, that's a stale green light
by Woody Thomas June 03, 2007
1 more definition
When a traffic light in the direction you are going has been green so long that you know it will change any second.
Passenger: "It's a stale green man, you're not going to make it."

Driver: "No way. Look, it changed after we went through."
by framboise eau de vie June 01, 2009

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