What is black when you buy it, red when you use it, and gray when you throw it away?

Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?

In Greek mythology, the Sphinx sat outside of Thebes and asked this riddle of all travellers who passed by. If the traveller failed to solve the riddle, then the Sphinx killed him/her. And if the traveller answered the riddle correctly, then the Sphinx would destroy herself. The riddle:

What goes on four legs in the morning, on two legs at noon, and on three legs in the evening?

Oedipus solved the riddle, and the Sphinx destroyed herself.

In the given picture, in how many ways can you read the word "Tiger"?

Paul's height is six feet, he's an assistant at a butcher's shop and wears size 9 shoes. What does he weigh?

That attorney is my brother, testified the accountant.

But the attorney testified he didn't have a brother.

Who is lying?

John went to a parrot shop in Mexico, and the parrot owner told him that his parrot is so unique that he repeats everything he hears. John got excited and immediately bought the parrot. John went home and spoke many words, but the parrot does not repeat anything.
He went again to the parrot shop and complaint to the shopkeeper, but the shopkeeper never lied. Explain?

What type of tree can I carry in my hand?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

The measurement of time, That can't be found on a clock, But can be looked upon on a map.

Who is He ?