Justin Bieber is said to have apologised to former US President Bill Clinton after slagging him in a video.

TMZ recently posted a DIY clip of the Canadian superstar whilst out and about, with the singer urinating into a mop bucket.

Bieber then sprays water at a photo of the politician and says: "F**k Bill Clinton".

However, the 'Boyfriend' star took to Twitter after the video leaked to reach out to the former President, saying:

"@billclinton thanks for taking the time to talk Mr. President. Your words meant alot. #greatguy."

It has been reported that the 19-year-old phoned up Clinton in an effort to apologise for the slur. Watch Justin Bieber slag off Clinton below: