"A piece of cake."

What does this idiom mean?

The idiom "a piece of cake" means "easy."

"This project will be a piece of cake."

"A dime a dozen."

What does this idiom mean?

The idiom "a dime a dozen" means that something comes about easily, or something is not valuable.

"I don't need friends like him; they are a dime a dozen."

"A shot in the dark."

What does this idiom mean?

The idiom "a shot in the dark" means taking a chance, or making a guess.

"I don't know how I answered the difficult question; it was just a shot in the dark."

"In the same boat."

What does this idiom mean?

The idiom "in the same boat" means agreeing with one another.

"You didn't like the book either? I'm glad we're in the same boat."

"An arm and a leg."

What does this idiom mean?

The idiom "an arm and a leg" means "a lot of money."

"That watch cost me an arm and a leg."

"At the drop of a hat."

What does this idiom mean?

The idiom "at the drop of a hat" means immediately, or at a moment's notice.

"If you were in danger, I would save you at the drop of a hat."

"Head over heels."

What does this idiom mean?

The idiom "head over heels" means deeply in love.

"I am head over heels  for my girlfriend."

"Out of the blue."

What does this idiom mean?

The idiom "out of the blue" means seemingly without any reason.

"She yelled at me out of the blue; I don't know what I did to upset her!"

The idiom "rock the boat" means to cause commotion or unrest.

"He was rocking the boat by being the only one to disagree."

"A cut above."

What does this idiom mean?

The idiom "a cut above" means "better than."

"This restaurant is a cut above the other ones in this city."