Everyone is at least a bit superstitious. The particulars might differ depending on where you grew up, but all human cultures have Superstitions of one sort or another.
Reddit user u/Noerdy asked:
Farmers' Almanac
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The Farmers' Almanac.
Its never been through peer review. It supposedly uses secret equations and the positions of celestial bodies (astrology anyone?) to predict weather.
"But they're over 80% accurate!"
That number is self reported using standards they establish.
God Bless You
Telling someone "God Bless You" when they sneeze.
Yet, for every other bodily function, the offender says 'excuse me'. Its so weird.
Umbrella
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Pretty sure death will come to me if I ever open an umbrella indoors. And when I see someone do it, I automatically wince because I know their life force is about to be taken from them.
I pissed my mother off to no end because I once asked her if she thought umbrella factories were all outdoors, or if they just had an unusually high turnover due to deaths in the family. She was very superstitious and not at all amused.
Nurses
Nurses will murder people who say a shift is quiet. We aren't allowed to say the q word. (I don't believe it, but it's fun to give each other hell about saying it or getting to blame someone when sh*t hits the fan.)
Nurses are ridiculously superstitious (generalization, but I've met so many superstitious nurses)
So many believe in ghosts, spirits, deities, luck, ect...
Due
That if you've had a bad run like at the casino, you're 'due' for a good run. Not how probability or binomial distribution works.
The same goes for investing. People won't sell a stock they lost money on because they feel it "owes" them something. But if you look at your portfolio as a point in time, you sell the ones that aren't doing well and buy ones that are a better investment.
Christmas colors
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Just in time for the holidays, Christmas colors are red, green, and white. Blood on snow to bring back the green plants after winter. Pagan tradition of blood sacrifice to ensure spring would come back each year.
Gum
Not to swallow gum. It's perfectly safe to and passes just as fast as anything else, but instead an old superstition about it being stuck in our digestive tract causes people to litter the stuff everywhere.
Jinx, again.
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Telling someone not to just say that something will go well because you don't want to jinx it.
Theater kids.
Break a leg!
Spent the entire autumn 2017 rehearsing for a major role. The premiere is a hit, performances come and go, and we retire for the year to continue in January.
What happens on Christmas Eve? Of course I break my bloody leg.
(ノಠ益ಠ)ノ彡┻━┻
Warewolves
That a full moon brings out the crazies. I think this is mostly confirmation bias.
Here's one source: https://www.washingtonpost.com/news/speaking-of-sc...
Replying to @StefanMolyneux/X
Replying to @StefanMolyneux/X
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May The Fourth Be With You 
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