Jackson’s lawyer, Thomas Mesereau, cross examined the now 15-year-old former cancer patient who last week graphically told jurors how Jackson had allegedly fondled him intimately on at least two occasions.

The witness conceded he had told a teacher a different story shortly after the time of the alleged abuse two years ago.

He recounted a conversation he had with Jeffrey Alpert, the dean of his school in 2003.

“I told Dean Alpert he didn’t do anything to me. I told him two times,” admitted the boy after Mr Mesereau reminded him of the meeting.

“I said Michael didn’t do anything to me,” the youth conceded from the witness box as Mr Mesereau attacked his testimony.

The conversation between the boy and his teacher, who is expected to testify, took place after the youth and his family had left Jackson’s Neverland Ranch for the last time in February or March 2003.

Dean Alpert reportedly took the boy aside and asked whether Jackson had ever done “anything of a sexual nature” to him, after Martin Bashir’s controversial documentary aired.

After court, the singer said, “Mesereau did a good job today”.

The admission came after Mr Mesereau last week got the accuser’s 14-year-old brother — the only eye-witness to the alleged abuse — and older sister to admit they had lied to authorities about aspects of the case.

Jackson’s lawyers claim the boy and his family made up the sex claims and the accuser’s mother coached her children to lie under oath in order to win financial settlements in lawsuits.

Mr Mesereau also got the youth to admit he had been upset with Jackson when the star reclaimed a car and a computer he had given to the family and changed his phone numbers without letting the boy know.

Mr Mesereau has suggested the boy made the sex claims because he felt abandoned by Jackson after the star ended his largesse towards the family.

The youth told how the star had become a father figure to him after his own parents separated.

He told how he had viewed Jackson as a father figure and identified a letter he wrote to the star addressed to “Daddy Michael from your son.”

“I’d call him daddy and he’d call me son,” the boy said.

“I started calling him daddy after my dad had left because I didn’t have a daddy.”

Mr Mesereau suggested last week the teenager only made the allegations after meeting a lawyer who represented a youth who won a settlement worth more than US$20m (A$25m) after making similar claims against Jackson in 1993.