Chickens are out in full force (Why did the chicken cross the basketball court? He heard the referee calling fowls!) and no joke is too corny (What do you call a chicken crossing the road?Poultry in motion!)
The only rule on National Tell A Joke Day is to laugh -- even a little. And tell a joke -- even a one liner.
Laughter not only releases feel-good brain chemicals, but it also gives the ab muscles a tiny workout.
Laughing is so beneficial, it's actually studied for its therapeutic effects. Gelotology looks at laughter and humor from a psychological and physiological perspective.
People have been joking around since 1900 BC, according to the National Day Calendar website.
And although the origin of National Tell A Joke Day can't be traced, it just might've started with a chicken.
Everyone knows the chicken crossed the road just to get attention. (C'mon, you laughed.)
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