Former UFC two-division champion Conor McGregor celebrated his son’s birthday in a pub in his hometown of Dublin.

The fighter walked on stage to the surprise of the audience, and sang a song together with Late Night host Jimmy Fallon.

McGregor told the visitors that his son had turned two and said he would sing an Irish folk song to celebrate the occasion.

The MMA star started solo, and was later joined by Fallon on stage.  

McGregor’s performance was recorded on video, and the fighter later uploaded it to youtube page. 

Watch below: 

So now we can definitely rule out a singing career for the MMA superstar. 

Don’t quit your day job Conny.  

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