"A drop" is slang for alcohol in this phrase. It means that someone doesn't drink Alcoholic Beverages. The image is of the person not even touching the drink with their hands.
To drop something anywhere , OR a very filthy accomodation
Nothing. I believe you're thinking of "a drop in the bucket," which is an idiom meaning something is only a tiny amount of what is actually needed.
I have never heard this phrase before, so I don't think it's an idiom. You can't have a herd of grain - ask the person what they actually said.
It's a sports reference. If you drop the ball, you have made a mistake and not done what you were supposed to do on your turn, or when the project was in your hands.
It is an issue you really don't want to handle or get involved in or a person you really don't want in your life.
I've never heard that idiom before. Perhaps you mean DOWN AND OUT, which means that the person is at a low point in their life, that they're poor in every way and not likely to make a success at anything in the near future.
To drop someone a line is to write them a short note--literally, a line of text. It is not really an idiom, it is an elliptical statement that is completed by Drop someone a line (of text in his mailbox).
It's not really an idiom. It means "what are you thinking about."
RFP is not an idiom. It's an abbreviation.
It is not an idiom, it means your nose is itching.
The idiom "at the drop of a hat" means to do something immediately or without hesitation, often at a moment's notice or without needing much prompting. It implies a willingness to act quickly or without delay.
Never heard of that one, but we say "take forty winks" to mean have a little nap.