It means his voice gave out from emotion, so there was a slight hesitation in his words. It is not an idiom, but an expression whose meaning may be guessed from an understanding of the words in it.
The correct idiom is "a frog in my throat," meaning that your voice is hoarse and croaking.
Idioms "catch on" because they are colorful ways of communicating.
It means you should be willing to risk a small amount in order to get a larger amount back.
It is not an idiom, it means your nose is itching.
Depending on the tone of voice you use, "Knock yourself out" is an idiom that could mean "Go ahead", or "Show me" or "I don't really care what you do".
The correct idiom is "a frog in my throat," meaning that your voice is hoarse and croaking.
"Catch you" means that they will meet up with you. They're saying they will see you later.
It means that the person is slow to catch on... isn't understanding things as quickly as other people.
Idioms "catch on" because they are colorful ways of communicating.
I was momentarily taken aback when the ploice officer said, "Catch you later."
Your voice.
She wore the bright red dress hoping to catch the fancy of her handsome coworker.
It means you should be willing to risk a small amount in order to get a larger amount back.
Depending on the tone of voice you use, "Knock yourself out" is an idiom that could mean "Go ahead", or "Show me" or "I don't really care what you do".
It is not an idiom, it means your nose is itching.
It's not really an idiom. It means "what are you thinking about."
RFP is not an idiom. It's an abbreviation.