A-Trak is a world champion DJ, in demand producer, and globetrotting club rocker without peer. Three 6 Mafia’s Juicy J is true Southern rap royalty on a hot streak of new music. And Danny Brown is rap’s rookie of the year, a critically acclaimed mic wrecker and budding style icon. Together, these three party professionals have come up with “Piss Test,” a speaker-detonating slice of gleefully antisocial Parental Advisory rap out today that serves as the first teaser off Loosies, the upcoming Fool’s Gold hip hop compilation. Play this at high volume, preferably in a residential neighborhood.