puff stock
 n.— «In the 1960’s, Mr. Fadem said, Wall Street saw many “puff stocks,” which he defined as newly minted public offerings sold by issuers as “a fairy tale long on potential and rosy future earnings estimates.”» —“Seeing Google With the Eyes of Forrest Gump” by Gary Rivlin New York Times Aug. 20, 2004. (source: Double-Tongued Dictionary)