Why do people go to bed?

A horse was tied to a rope 5 meters long and the horses food was 15 meters away from the horse. How did the horse reach the food?

Which flower has two lips?

A bag contains 64 balls of eight different colours. There are eight of each colour (including red). What is the least number you would have to pick, without looking, to be sure of selecting 3 red balls?

What can you catch but never throw?

Two boys wish to cross a river. The only way to get to the other side is by boat, but that boat can only take one boy at a time. The boat cannot return on its own, there are no ropes or similar tricks, yet both boys manage to cross using the boat.

How?

It is a six-letter word.
The first four letters are me.
The second and last letters are the same.
The fourth second and last letter is payment.

Who is it?

Which city is three-fifths chick two third cat and 50% goat?

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?