Celebrity foot-in-mouth disease: Jonah Hill and Justin Bieber edition

It's been a good week for celebrity gaffe watchers, with the ever-reliable Justin Bieber hitting the news for inappropriate language, and actor Jonah Hill getting into the mix with a slur of his own. 

Just days after Bieber, 20, apologised for telling a racist joke in a video taken four years ago, another video obtained by TMZ sees him making racial jokes, to the tune of his hit One Less Lonely Girl. 

In the video, taken when Bieber was 14, he replaces the word "girl" with the N-word laughingly, then sings "If I kill you / I'll be part of the KKK". 

According to the site, Bieber told his mentor Usher and Will Smith about the videos years ago and that he knew it was a stupid thing to do. 

A source told E! News that Bieber's legal team is looking to find who exactly leaked the video "as this is stolen property, plus there has been such a shakedown by this person trying to get a substantial amount from Justin's side". 

After the first video leaked earlier this week, he apologised, saying: "I thought it was OK to repeat hurtful words and jokes, but didn't realize at the time that it wasn't funny and that in fact my actions were continuing the ignorance."

Jonah Hill: "Use me as an example of what not to do"

Feeling harassed by a paparazzo over the weekend, actor Jonah Hill lashed out with a homophobic slur. 

He's spent the last few days apologising for it while on a media blitz for his new movie 22 Jump Street, also starring Channing Tatum. 

On The Tonight Show Starring Jimmy Fallon, he said, with his voice cracking at times: "I didn’t mean this in the sense of the word, I didn’t mean it in a homophobic way. [But] I think that doesn’t matter, how you mean things doesn’t matter…words have weight and meaning. The word I chose was grotesque and no one deserves to say or hear words like that.”

Watch the video of his apology here. 

Sources: Variety.com, TMZ, E! Online

Photos: TMZ, YouTube, AFP, Reuters