Kelly admits to bum fun with Keith

KELLY Brook is ready to shock fans with an ANAL SEX joke.

The actress talks about BUM FUN in the cheeky trailer for Keith Lemon’s movie, as she tells him: “Alright, I’ll let you smash my back doors in.”

The bum-tastic trailer for Keith Lemon: The Film will be screened in cinemas this month.

It shows the Celebrity Juice star – played by Leigh Francis – and Kelly in bed together.

And Keith turns on the charm because he’s desperate for some BACK DOOR action.

In a bid to tempt her to let him do her up the wrong ’un, he offers her a role in his film.

And he tells her: “This film is going to be massive. It could even win an Oscar.”

After Kelly gives her raunchy reply, film fans will see the couple enjoying a romp under the covers.

While working on the film, Kelly had tweeted “my cheeks hurt – from laughing.”