Why do Chinese men eat more rice than Japanese men do ?

When it's bad luck to meet a black cat?

Only one color, but not one size,
Stuck at the bottom, yet easily flies.
Present in sun, but not in rain,
Doing no harm, and feeling no pain.
What is it?

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

Things are just as they seem, right? Well, check again.
Can you count the number of tigers in this picture ?

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

I am a five-letter word and people eat me. If you remove the first letter I become an energy form. If you remove the first two letters, I am needed to live. Scramble the last three letters and I am a drink. What word am I?

Which wheel of car does not rotate when you turn your car right?

What am I?

In one of the popular batman series movie "Batman Forever", there was a riddle that goes like "Tear me off and then scratch my head and I was red then and now I am back. Who am I?