- sam da man 2008
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- Intrepid Mythic Member
Posted by: x Foman123 x
It refers to "Coup d'Bungie," the name of a script in Firefox that's popular with a lot of users here. When someone says "nice coup," they're typically referring to the user's custom avatar which is viewable to other users of this particular script. See this thread for more information.
In addition to what Foman said, there is a group for Coup d'Bungie where details about it can be found.
Here.