Crohn's disease and colitis, two similar diseases in which a person's immune system violently attacks the lining of the intestines, may be more common now than in the days before sanitation and effective drugs because there aren't enough intestinal worms to keep immune systems busy.

FORBES: Those Resourceful Bugs

Children with the worms can't concentrate because they are scratching themselves all day and night.

CNN: With river blindness, 'you never sleep'

It can't be overstated that the worms itch, a lot.

CNN: With river blindness, 'you never sleep'

And you can actually tweak as well - that's charming worms from a distance with a long-handled fork, in case you're a bit squeamish of the worms, you don't have to get too close.

NPR: The Tricks And Tools Of Worm Charmers

Rule 18 incidentally says that at the end of the event the worms must be released so that the birds don't have a feast.

NPR: The Tricks And Tools Of Worm Charmers

The enforcement agency considers the Games an amateur enterprise, even though Olympic basketball players can come from the NBA. "We feel it would open a big can of worms to determine who's professional and who isn't professional, " said Jerry Markling, the NGCB's chief of enforcement.

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