popping
n.— «According to the indictment, the encounter started with McKnight identifying himself as a Crip by asking, “What’s cracking?” Israel, 19, reportedly replied, “What’s popping?” which announced his Bloods affiliation.» —“More than a dozen face lengthy terms” by Scott Frost Trentonian.com (N.J.) Apr. 17, 2005. (source: Double-Tongued Dictionary)