What occurs twice in a week, once in a year but never in a day?

I don't get anymore wetter, no matter how much rain falls on me.

I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?

There are two beautiful yet remote islands in the South Pacific. The Islanders born on one island always tell the truth, and the Islanders from the other island always lie.
You are on one of the islands and meet three Islanders. You ask the first which island they are from in the most appropriate Polynesian tongue, and he indicates that the other two Islanders are from the same island. You ask the second Islander the same question, and he also indicates that the other two Islanders are from the same island.
Can you guess what the third Islander will answer to the same question?

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

Begin with a word, five letters to my name,
Remove the first and last but I am the same
Take out my middle and still, I remain.
What word am I?

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?

During an experiment, a guy throws a bouncy ball from a 100 feet tall building. The ball has a specific characteristic. Every time it hits the ground, it bounces up halfway.

How many bounces do you think the ball will make before it comes to a stop ?

I am lying and I always lie. Tell me whether I am lying or telling the truth.

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