What is dramatic Irony?

Looking at her son's messy room, Mom says, "Wow, you could win an award for cleanliness"

A fisherman sits peacefully in his boat, but the audience sees a giant shark lurking just below.

This type of irony is when the opposite of what is expected happens and is unexpected by everyone.

Samantha accidentally poured salt in the punch instead of sugar and now the drink is salty. She decided not to tell anybody. The party guests start to become sick but they don't know why. Why is this dramatic irony?

There are roaches infesting the office of a pest control service

This type of Irony is when the reader knows something that a character doesn't.

The reader knows that a storm is coming, but the children playing on the playground do not

A person running for the State Treasurer office (the person over the money) is actually bankrupt and hasn't paid taxes for two years.

Jack Johnson, a long-time vegan, just won the annual BBQ ribs grilling contest. Explain why this is situational irony.

A pilot who is afraid of heights.

This type of Irony is when something is said that is opposite of what is meant.