I want to be a fly on the wall at the Presidential Dinner.
What does "fly on the wall" mean?

to be unnoticed while watching or listening to something

The chocolate cake is the bee's knees! You must try it!
What does "bee's knees" mean?

Hoshi is a sitting duck parking in front of the fire hydrant. He will indeed receive a fine.
What does "sitting duck" mean?

Sam was going to ride the rollercoaster, but he chickened out at the last minute.
What does "chicken out" mean?

Mengyuan is sleepy; she will take a cat nap before the game.
What does "cat nap" mean?

Boris clams up when giving public speeches.
What does "clam up" mean?

There is something fishy going on at work. The numbers don't add up.
What does "fishy" mean?

My parents had a cow when I wrecked my second car.
What does "have a cow" mean?

Hold your horses! I am coming!
What does "hold your horses" mean?

The Garcias have a nest egg for their retirement.
What does "nest egg" mean?

It's hard not to pig out on Taco Tuesday!
What does "pig out" mean?

Of course, it's raining cats and dogs on the day I forget my umbrella!
What does "raining cats and dogs" mean?

You must take the bull by the horns and invest now if you want to retire early.
What does "take the bull by the horns" mean?

Lin is such a copycat! First, she bought the same car as me, and now she has my hairstyle.
What does "copycat" mean?

someone who does the same as another person

someone who does the opposite of another person

The baby cries crocodile tears when it's time for bed.
What does "crocodile tears" mean?

I want to be a fly on the wall at the Presidential Dinner. What does "fly on the wall" mean?