Something that hits you fast and hard. It hurts to get hit by a brick, just like it hurts when someone tells you some bad news. The "flying" part is to imply that it [i]will[/i] hit you (because a flying brick is homing, or something), just like in real life you're going to face some hard times.
It is not an idiom - it is a line from an old television cartoon called Rocky and Bullwinkle. Rocky was a flying squirrel. (Bullwinkle was a moose).
No, it is a descriptive phrase coined in the 1950's to describe a UFO shape. A pilot described an object he saw flying overhead, and said it looked like two saucers placed together. The media coined the phrase "flying saucers" from this.
This isn't an idiom - it's talking about some animal with their tail held high, flying behind them.
"To be" is not an idiom - it's a verb.
Pest is not an idiom. It's a word.
The idiom "apple shiner" means the teacher's pet.
The meaning of the idiom in the pink of health means being in good health.
Yes, a common idiom in "The Flying Trunk" by Hans Christian Andersen is "out of the trunk" which means a surprising or unexpected development. This idiom is used when the trunk in the story unexpectedly flies to various destinations.
The idiom means impress someone is egg on
It's not an idiom - to cope means to deal with, or to handle
"Old hand" is an idiom meaning having lots of experience.
It is not an idiom. It is an expression. The difference is that an idiom's meaning cannot be derived from the meaning of its individual words. In the expression wolfing down food, the meaning is clearly derived from the meaning of the words, and people have been saying it for hundreds of years.