The Penguin and the Pea

Again, for penguin, I found an interesting book talked about the real princess. Isn't it familar with the other story? Yes, but it happened on penguin's kingdom. The queen wanted to identify the real princess, she put the pea under twenty mattresses!! What! Twenty! Are you kidding me?
The queen said " We must be absolutely sure that this young penguin is a real princess! Only a true princess is so delicate and fragile as to feel a single pea under twenty mattresses~

No doubt, the princess past the test and married with the young prince then joined in the royal family.

Would you like to try it? Put a pea under your pillow then feel it....can you really feel about the pea? If not, don't worry, you don't have to marry to the prince. (picture by website)