The 1 yen coin can be used as a weight, because it weighs exactly one gram. Also, it can float on water.
19
Most of the dust underneath your bed is actually your own dead skin.
251
A quarter has 119 grooves on its edge, a dime has one less groove!
34
A new baby usually deprives each of it's parents around 350-400 hours of sleep in the first year. That is one entire nights sleep per week, per parent.
194
There are 86,400 seconds in a day.
110
Any domino can knock over another object up to 1.5x its size. The 32nd object would be big enough to knock over the Empire State Building.
18
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
19
Donkeys kill more people annually than plane crashes.
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