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

There are three boxes of different sizes with three cupcakes inside each of the boxes in Christina's kitchen. At night her daughter wakes up and goes to the kitchen. She opens a box and eats all three cakes.

But in the morning Christina finds out that each box still had three cupcakes. How?

Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

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?

What can run but never walk, have a mouth that never speaks, have a head that never weeps, and have a bed but never sleeps?

There’s a one-story house in which everything is yellow. Yellow walls, yellow doors, yellow furniture. What colour are the stairs?

Arrange the numbers 1, 2, 3, 4, 5, 6, 7, 8 and 9 above and below the division line in a manner that the thus formed fractions equal to 1/3.

(You can use one number only once)

What kind of band never plays music?

Using eight eights and addition only, can you make 1000?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?