throw it up
v. phr.— «She and other deputies exchange gang information. “Kids try to fly in under the radar, try to keep their gang links secret.” But, she said, you might see a student “throwing it up,” jargon for making gang hand symbols, and that’s when she moves in.» —“Resource officer battles gang activity” by Hugh Muir Free Lance-Star (Fredericksburg, Maryland) Nov. 6, 2007. (source: Double-Tongued Dictionary)
Further reading
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