Have you ever heard the expression, “Oh, that's an old wives tale?” Of course, you have. Who hasn't? Nonetheless, it informs a person speaking false information, commonly misspoken, that it's not the truth.
Also, if you leave your eyes crossed for too long, they don't get stuck that way. But you've likely heard the opposite of both. It's interesting to see how deep-rooted myths stay engrained in a society that continues to spread misinformation.
Roboroman2 stated, “This one is technically true, but it's misunderstood. Yes, it's true that we only use about 10% of our brains at a time, but that's because we don't use it all at once."
Redditor tickingkitty answered, “The Daddy Long Legs is the most venomous spider in the world but can't penetrate our skin. The truth is, the venom is pretty weak, and it can penetrate the skin.”
Reddit user the-cosmic-kraken nominated, “Shaving your hair makes it grow back darker and thicker.” User mozzarella_lady added, “I've had several people insist this is true because they experienced it.”