i've just spent a couple of weeks at work listening to the roofer trying to assert urban myths as truths,its painful to listen to,theres a collective silent groan when he walks into the lunch room!,heres some of his best-
onions make you sick,
once you cut an onion it begins to turn poisonous,save it in the fridge and use it the next day and your asking for trouble,
i pointed out i normally cut up an onion on sunday night and have it on my sandwiches all week without ever getting sick didn't deter him!
eyes popping out of your head,
he worked with a guy who'd worked with a guy who stifled a sneeze and the pressure caused his eyes to pop out of his head,yep,just dangled there by his optic nerve looking at his feet.
the mocking laughter didn't knock his confidence in this story one little bit
there are others which i can't remember right now but i'll post them when i do,
so what are yours?