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Lying in wait on Facebook chat until the object of your ambush appears in green, and then immediately sending them a message, commenting on something on their wall or tagging them in a post.
Flaming hot #1: Goddd I can never be on FB chat anymore, that creepshow Mitchell keeps chirping at me
Smokeshow Friend #1: That's the worst. Classic facebook ambush.
by Brubes July 13, 2011
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