Selena Gomez advices Jeff Ross on roasting Justin Bieber

Jeff Ross has revealed that he got tips from Justin Bieber's former girlfriend, Selena Gomez, on how to roast the 21-year old singer.

In a recent interview with The Huffington Post newspaper, the 49-year-old stand-up comedian admitted that he researched dirt about Bieber for 'Comedy Cnetral' roasting and asked Gomez as well for the tips, the Mirror reported.

Bieber and Gomez's on and off relationship for four years was also a part of the cruel jokes and Ross said in the show that Gomez too wanted to be there but was busy dating men and asked Bieber whether he dumped the 22-year-old because she grew a moustache before he did.

Ross also added that Gomez had sex with him proving that Mexicans would do the disgusting jobs that Americans just won't do.

During the show, the 'Boyfriend' singer apologized for his behavior over the last two years, saying he had lost some of his best qualities and looked forward to become someone to be proud of.

Bieber added that someone close to him once said that how one raised from a fall was how he was truly defined as a man.