Tread lightly, tiptoe, walk on eggshells
No. It means just what it seems to mean -- that you should be careful what you wish for.
It's not an idiom. It means exactly what it looks like.
It means that you were being very careful what you said and did, as though you were trying to walk across eggshells without breaking them.
The idiom "apple shiner" means the teacher's pet.
An idiom that means surrender is to "wave the white flag." A closely related idiom is to "throw in the towel" which means to give up."
Yes, "in a pickle" is an idiom. It means to be in a difficult or troublesome situation.
It's not an idiom. It means exactly what it says. "By all means" or "by any method necessary."
"To be cheeky" IS an idiom. It means to sass or talk back.
It is not an idiom, it means your nose is itching.
It's not really an idiom. It means "what are you thinking about."
The best way to find out the meaning of an idiom is to look it up in a reputable dictionary or idiom database. You can also search online for the idiom along with the word โmeaningโ to find explanations and examples of its usage. Additionally, asking a native speaker or language teacher for clarification can help you understand the idiom better.
It's not an idiom - it means a cup with some tea in it. NOT your cup of tea, however, is an idiom - it means that something is not to your liking or preference.