posted 03-22-2001 02:57 PM            

An older "Mrs Robinson" type will seduce the brat in the first Simpsons movie.

Bart, who is supposed to be 10 years old, has not aged since The Simpsons began more than a decade ago.

But he will be transformed into an even naughtier teenager when he moves from the small to the big screen.

Insiders claim Bart will lose his cherry to an older woman who tempts him into her bed.

A show source revealed: "One of Bart's catchphrases is 'Eat my shorts'. But in the movie, he won't be wearing any!"

Series executive David Mirkin admitted that the Simpsons would be going Xrated for the movie version.

He said: "I see lots of Simpson sex in the movie."

But he added that we may have to wait a long time for the film version of the TV hit, screened by the BBC and Sky.

He said: "We're waiting for the show to end for the movie to happen." The adventures of couch potato Homer, his wife Marge and their kids in the fictional city of Springfield are a worldwide success.

Bart has even enjoyed a chart hit with his rap single Do The Bart Man.

But news that he's to have sex may prove a bit of a shock to middle-aged mum-of-two Nancy Cartwright.

She provides the voice of Bart for the cartoons.