Not life threatening, more of a humorous annoyance:
"A Louisiana man flying to California woke up on a dark, empty plane parked at Bush Intercontinental Airport in Houston after sleeping through the call to exit the aircraft, officials said on Monday."
First he called his girlfriend using his cell. Sounds like she didn't believe him. Which made me wonder if he might be a bit of a joker. Did he arrange for this somehow?
Eventually a service crew found him and let him out.
Was someone inept
or did he hide?
Anyway, I wish he'd escaped on that exit slide.