So I live in rural Alabama and recently all these rural/urban bits of wisdom have been really pissing me off. Allow me to explain.
Yesterday my sister got uber pissed at me for drinking the last Sprite because she needs it for nausea, as if a sugary carbonated drink has some kind of medical effect.
Many people won't go swimming shortly after eating because they think they'll get a cramp and possibly drown.
My mother sometimes gets pissed at me for going outside without a jacket because she thinks you can catch a cold.
I think these qualify as "irrational". So! Please post and add more rural/urban bits of wisdom to my list!