What work can one never finish?

Rebus Puzzle Definition: A rebus is an illusion device that uses pictures to represent words or parts of words.
What does This Rebus Puzzle Identify?

Can you identify the hidden rebus in the image below?

What can jump higher than a building?

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

There was a man he lives in a hotel each morning he presses the first floor button each evening if there is a person in the elevator he asks him to press the 10 floor button if there is no one in the elevator he takes the stairs why.

I have branches, but no fruit, trunk or leaves. What am I?

What's the best place to go shopping in the ocean?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

How many times can you subtract the number two from the number fifty?