Eminem reverts to his old celebrity-slamming days and takes a shot at Lady Gaga in “A Kiss,” a intense cut off the forthcoming Bad Meets Evil EP.

Lady Gaga accepts an award onstage from rapper Eminem and actor Tracy Morgan during the 2009 MTV Video Music Awards at Radio City Music Hall on September 13, 2009 in New York City. (Photo by Kevin Mazur/WireImage)

Eminem reverts to his old celebrity-slamming days and takes a shot at Lady Gaga in “A Kiss,” a intense cut off the forthcoming Bad Meets Evil EP.

While Em name-checks Katy Perry in the Bangladesh-produced track, saying that he’s “on her tail,” the rapper saves his venom for Gaga, whom he mocks for the 2009 rumor that she was a man.

“Tell Lady Gaga she can quit her job at the post office/She’s still a mail (male) lady/Wouldn’t f**k her with a dick/You heard it, the verdict’s in,” Eminem raps at the 3:10 mark in the song.

Of course, Eminem’s early material was riddled with celebrity mockery — Fred Durst, Christina Aguilera, Will Smith and Pamela Anderson all took a beating in 2000 single “The Real Slim Shady” alone.

Eminem’s most recent diss of a female pop star involved Mariah Carey, whom he skewered (along with hubby Nick Cannon) in the “Relapse” track “Bagpipes from Baghdad.”