My husband laughed until he blacked out. What happened?

He was probably just being deprived of oxygen. I've never laughed hard enough to p out but I've gotten lightheaded from not being able to breathe . Or maybe he was just exhaling to hard? I would avoid the hospital for $5000 and go to the doctor unless he, or you, really feel that it was something more serious and might need attention immediately. Best of luck to yall.