A 10-year-old British boy unknowingly traded his Yorkshire accent for a "posh" dialect following life-saving brain surgery, according to the boy's mother.
William McCartney-Moore's usual northern England accent became more refined with elongated vowels after he had an operation to remove fluid on his brain, French news service AFP reports.
William, who is from York, needed the surgery after contracting a rare strain of meningitis last March.
"He survived the operation and the most amazing thing is that he came out of surgery with a completely different accent,'' his mother Ruth McCartney-Moore told the York Press newspaper. "He went in with a York accent and he came out all posh. He no longer had short 'a' and 'u' vowel sounds. They were all long.''