In some parts of Turkey think twice before chewing gum because of the fact that there is a belief that if you are chewing gum at night it is actually rotting dead flesh.
In the Medieval period in England, expectant mothers made a ‘Groaning Cheese’. It was a large wheel of cheese that matured for nine months as the unborn child grew. When the time of birth came, the whole family would celebrate it by eating ‘Groaning Cheese’. The newborn would then be passed through the rind of cheese on Christening day and blessed with a long and prosperous life.
Many people hang a horseshoe on a door knob with its ends pointing upwards in order to bring good luck. This belief stems from the fact that a horse shoe has seven holes, and it is widely thought that seven is a lucky number.
This mythical date has been a source of superstition from the 19th century. Many people purposely avoid doing anything significant (like meetings, socials, etc) this day as far as there is a belief that it is cursed and it's a source of misfortune.
Opal is said to bring bad luck to whoever wears it. This superstition stemmed from the bestseller ‘Anne of Geierstein’ by Sir Walter Scott wrote in 1829. Protagonist Lady Hermione was by mistake accused of being a demon due to the fact that she dies shortly after a drop of holy water accidentally falls on her opal jewelry that changed its color. Shortly after its publication, the Opal market crashed and prices on this stone extremely dropped by 50%.