A wife accidentally snapped her husband's penis by rolling off him while they were having sex - so she could do some online shopping on her phone.

The accident happened as the woman, from Chongqing in China's southwestern Sichuan Province, abruptly moved to turn off a alarm she had set on her mobile phone at midnight.

But in her rush to pick up bargains at the start of China's biggest online shopping event, Singles Day, she fractured her husband's penis prompting him to cry out in pain.

A wife accidentally snapped her husband's penis by rolling off him while they were having sex - so she could do some online shopping on her phone

According to Shanghaiist, the pair checked for signs of damage but could not find any evidence he had been injured.

But the next morning, his penis had become 'purple and swollen', the Shanghaiist reports, citing the website Tiexue.

They rushed to hospital in Chongqing and a doctor found that the man's penis had been ruptured.

The accident happened as the woman, from Chongqing (pictured) in China's southwestern Sichuan Province, abruptly moved to turn off a alarm she had set on her mobile phone at midnight

He later underwent an operation and was told that he would suffer 'no permanent damage'.

Singles Day is held every year on November 11 and is considered the biggest online shopping event in the world.