Why do people go to bed?

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

It belongs to you, but other people use it more than you do. What is it?

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?

A Car driver was heading down a street in Washington. He went right past a stop sign without stopping, he turned left where there was a 'no left turn' sign and he went the wrong way on a one-way street. Then he went on the right side of the road past a cop car. Still, he didn't break any traffic laws. Why not?

Why do we preferably have round manhole covers and not square ones?

After teaching his class all about Roman numerals (X = 10, IX=9 and so on) the teacher asked his class to draw a single continuous line and turn IX into 6. The teacher's only stipulation was that the pen could not be lifted from the paper until the line was complete.

As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.

In the addition below, all digits have been replaced by letters. Equal letters represent equal digits and different letters represent different digits.
ABCABA
BBDCAA
ABEABB
ABDBAA
------- +
AAFGBDH
What does the complete addition look like in digits?

Which English verb becomes past tense just by rearranging the letters?