Rolling Stones guitarist Keith Richards was allegedly drunk when he fell out of a tree while on holiday in Fiji in April.
After the fall Richards had to be flown to New Zealand for a brain operation.
A friend of the legendary rocker's wife, Patti Hansen, says: "He was legless and showing off to his bandmates.
"He feels like an idiot. But he sees the funny side now - he is the first man to have brain surgery for a hangover."