"According to reports, the laughter was incapacitating when it struck"Wiki article
Wouldn't it be fun to call in sick at work with that ailment. ("My doctor has advised immobilization and three days of watching nothing but "According to Jim"...?)
According to the Wiki, the symptoms of the epidemic included farting, attacks of crying and random screaming. What are the odds of those three symptoms ever occurring at once? Who cries while farting? And who farts while screaming?
Think about those questions. Then, watch the funniest joke in the world.