Eminem mocks Caitlyn Jenner, Bill Cosby and Donald Trump in six-minute freestyle

"It's rarely very personal," he explained, before insulting several celebrities.

Eminem (Getty)

Eminem isn’t the first person you’d associate with the word ‘compassionate’ so his regular barbed attacks on celebrities shouldn’t come as too much of a surprise.

But the rapper, real name Marshall Mathews, has still managed to cause offense in his latest free-style rap, mocking Caitlyn Jenner’s transition as well as ridiculing Bill Cosby, Hilary Clinton, Rita Ora and Angelina Jolie in a blistering take-down.

Appearing on radio show Sway in the Morning, he was promoting his soundtrack to the new Jake Gyllenhaal film Southpaw, having released it through his label Shady Records.

"Heat seeking missile duck, demented sick see who gives a f**k. I invented p***k and this a true statement, I see the b***h in you, Caitlyn. I keep the pistol tucked like Bruce Jenner’s d**k. No disrespect though not at all, no pun intended that took a lot of balls," he spat.

Despite claims he was being transphobic in his treatment of Jenner, Mathers issued a ‘disclaimer’ saying all of his jibes were just a bit of fun.

“I just say s**t to say it,” he told Sway. “It's very rarely personal. If it was personal, somebody would know. It's all in fun.”

One celebrity listeners were less concerned about, however, was Bill Cosby, who came out of the freestyle pretty badly as Mathers condemned him for the way he treats women.

“I made monopoly off misogyny,” he rapped, “Sodomy, how many chocolatey Jell-o pops can he possibly lace, walking atrocity / No wonder you scoff at me, it’s obvious I’m as off-putting as Bill Cosby is. Treat women like property”

Donald Trump also got dragged into it, with Mathers saying 'I'm f**ked worse' than the reality TV star turned Republican candidate.