A woman found something so hilarious she broke her face, it has been reported.
The woman, who has not been named, was travelling on a high-speed train headed for Guangzhou South railway station in South China, when she is believed to have started laughing at something.
Local papers reported she laughed so hard, in fact, that she dislocated her jaw and was left with her mouth jammed wide open.
She called for help, and staff put out an announcement on the train’s public address system asking there was a doctor onboard.
Luckily for the stricken woman, there was.
Doctor Luo Wensheng of Liwan Hospital – part of Guangzhou Medical University – heard the request and hurried to help. He said: “I was resting when I heard an announcement asking whether there were any doctors [onboard the train].
“I rushed over and found the passenger unable to speak or close her mouth.
“She was drooling, so I initially thought she had had a stroke.
“But I took her blood pressure, then asked her some questions, and learned that she had actually dislocated her jaw.”
According to reports, the woman’s jaw came out of place after she laughed too hard, and she was left with her mouth wide open.
“I warned her that I wasn’t an expert, but I knew how to do the procedure. I also told her there was a chance I wouldn’t be able to set it.
“The patient was quite nervous and her facial muscles were all very tense, so it failed on the first attempt.”
He continued: “I advised her to go to a hospital instead, but train staff told us it would be another hour.
“The passenger became very agitated and wanted her jaw set right away, so I agreed to try again.
“I did it while she was distracted, and luckily it went back in place.
“The passenger revealed that she had dislocated her jaw in the past due to repeatedly vomiting during pregnancy.
“If you’ve dislocated your jaw in the past, laughing, yawning, or even just opening your mouth too wide, can lead to it happening again.”
The original Chinese news report doesn’t say what the joke that caused the woman’s jaw to dislocate actually was, but perhaps that’s for the best.