A Danish man having surgery on his backside broke wind and set his genitals alight.
A surgeon was removing a mole on his backside with an electric knife when the man broke wind, lighting a spark.
His genitals had been washed with surgical spirits and caught fire.
He's suing the hospital for pain and suffering and loss of income.
He says he had to take extra time off work and can't have sex with his wife. The hospital says it was an unfortunate accident.
"When I woke up, my penis and scrotum were burning like hell," the man told Danish Newspaper BT.
Surgeon Dr Jorn Kristensen said: "No-one considered the possibility the man would break wind during the operation, let alone that it would catch fire. It was an unfortunate accident."
The 30-year-old patient said: "I've had to be booked off work for longer than expected and, besides the pain, I can't have sex with my wife."
The operation which was being carried out at the Kjellerups hospital, was aborted immediately after the accident.
Reports say it's unlikely the doctor will face disciplinary action.
Patient having op on backside breaks wind, causing fire
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