Why do people go to bed?

A man was gazing through the window of the 23rd floor of the building. He suddenly opened the window and jumped on the other side of the window. On landing on the floor, there was not a sheer mark of injury on him.

How can that be possible if he did not use any kind of parachute and did not land on a soft surface?

Can you find the ages of a son, father and grandfather based on the following facts?
The sum of the ages of grandfather, father and son is 140 years.
The age of the son in months is the same as the grandfather in years.
The age of the son in days is the same as the father in weeks.

What is common among 11, 69, and 88?

Today, I celebrated my 32nd birthday but I was born in 1972.
How is this possible?

Once upon a time, there was a castle on a square island. The entire island was surrounded by a 14m wide trench. The Romans had wanted to invade the castle and had brought a few wooden planks along with them to facilitate themselves in crossing the moat. The planks were however found to be only 13m long.

The Romans still managed to cross the trench. How did they do it?

Can you write down eight eights so that they add up to one thousand?

Complete the table series riddle by finding the number that can replace "??".

Can you decipher the following common phrase?

T M C
A U O
H S M
W T E

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?