The irrational fear of palindrome
s (words that read the same forwards and backwards).
Dude 1: Hey, what's your name?
Dude 2: Bob.
Dude 1: AAAAAAAAAAH! *Runs and hides behind sofa*
Dude 1: AAAAAAAAAAH! *Runs away and falls down stairs*
A word or phrase reading the same forwards and backwards.
"Doc, note I dissent. A fast never prevents a fatness; I diet on cod."