What does does this rebus picture means ?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

I guess 76.8% of readers will like this riddle.

What's the least number of people should read this post?

Decode this picture on T-Shirt and tell what it says ?

On a certain day, John celebrated his birthday. Two days later, his older twin brother Jacob celebrated his birthday.

Is this even possible? How can it be?

A and B have a certain number of chocolates with them. If B gives one chocolate to A, they will have an equal number of chocolates. But if A gives one chocolate to B, then A will be left with half the number of chocolates that B has.

Can you find out the number of chocolates they have right now?

If eleven plus two equals one, what does nine plus five equal?

What jumps when it walks and sits when it stands?

Why do we preferably have round manhole covers and not square ones?