Top 100 Riddles and Brain Teasers 81 to 85

Riddle 81:
What is the longest word in the English language?
Solution:
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Smiles (there's a mile between the first and last letter)

Riddle 82:
What is the center of gravity?
Solution:
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V

Riddle 83:
What do you serve that you cannot eat?
Solution:
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A tennis ball

Riddle 84:
What doesn't get any wetter, no matter how much rain falls on it?
Solution:
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Water

Riddle 85:
Who can shave 25 times a day and still have a beard?
Solution:
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A barber