Green’s Dictionary of Slang

1. (US) a housing project.

c.2003		Urbanfab.50megs.com 🌐 The school actually wanted the PJ torn down cuz of rodents.
2008		R. Price Lush Life 10: Yo, I just got jacked in the P.Js. I need me a onetime whistle .

2. party juice, i.e. a cocktail of liquids including an unspecified alcohol content, typically sevred at fraternity parties.

2005		Urban Dict. 🌐.
2012		C. Eble (ed.) UNC-CH Campus Sl. 2011.