American car horns beep in the tone of F.
66
You can start a fire with ice.
367
In many countries, urine was used as a detergent for washing.
17
If you mouth the word "colorful" to someone, it looks like you are saying "I love you".
634
The chlorine smell in swimming pools is accentuated by the chemical's reaction with impurities (like poop.)
7
Real diamonds do not show up on x-ray.
36
A Swiss man replaced his car's broken heater with a fully functional wood burning stove.
15