Russell Brand and Charlie Sheen have pet names for one another and the pair are set to do yoga together.

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The British comedian and the Anger Management star – who underwent a public meltdown last year – have struck up a friendship after working together recently promoting shows on network FX and the US actor came up with some special monikers for them to use.

Russell explained to The Sun: ”I got an answerphone message, ‘Brand, Genius One. This is Genius Two’.

”There were instructions to go to his house. There was him being Charlie Sheen – which was out of control – sat with a bunch who looked really on the edge.

”I think he’s super-cool and funny as f**k.”

It was recently claimed that Brand X presenter Russell – who has previously battled addictions to drugs – has invited Charlie to join his yoga class.

A source said: ”Russell and Charlie have been spending an increased amount of time together as they’ve been named by FX as the stars for their summer schedule so have done a lot of promotional work together.

”Russell has invited Charlie to join him at his yoga classes.”