What is the Surname of Barbie Doll?

During which month do people sleep the least?

This is a most unusual paragraph. How quickly can you find out what is so unusual about it? It looks so ordinary, you'd think nothing was wrong with it. Actually, nothing IS wrong with it. But it is not as ordinary as you might think. If you think about it for a bit, you will find out why it is truly so unusual. So what is it? What is so unordinary about this paragraph?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

Can you spot what's wrong with the following sentence?

PETER WAS ANGRY AT
HIMSELF BECAUSE HE
ACCIDENTALLY LEFT THE
THE KEYS TO HIS CAR
AT HIS FRIEND'S HOUSE.

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

What is the riddle which can be asked all day with a different correct answer each time.

Which point will the car reach to go out?

The more you take me, the more you leave me behind.
Who Am I?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?