Todays word is aibohphobia

The irrational fear of palindromes.
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Dude 1: Hey, what's your name?
Dude 2: Bob.
Dude 1: AAAAAAAAAAH! *Runs and hides behind sofa*
Bob: Wow.
Dude 1: AAAAAAAAAAH! *Runs away and falls down stairs*

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Courtesy of the Urban Dictionary.