Los Angeles, Aug 17 (IANS): Justin Timberlake is all praise for his ex-girlfriend Cameron Diaz for playing the character of a foul-mouthed teacher effortlessly in "Bad Teacher".

The two are paired together in this movie and Diaz plays a teacher who hurls abuses, smokes marijuana and drinks alcohol and eventually tries to win over Timberlake, who plays a rich guy.

"I think funny women have been around forever -- Carol Burnett, Madeline Kahn. I mean, there have always been genius female actors in comedy. The coolest thing about this movie is that a male could have played this lead role. It's a great thing to see a female can do it and do it as well as Cameron does it," the 30-year-old said in press statement.

While "Bad Teacher" was released in the US, Canada and Britain in June, the film will be releasing in India Friday and the singer-turned-actor sees no problem if the censor board gives Adult rating to the film.

"One can also argue that if you take away the Adult rating, it's going to take all the fun out of being a teenager and sneaking in. So let's be honest, they're going to do it," he said.