The idiom feet first can mean a variety of things according to where and with what other expressions it is used. For example "to jump in feet first" means to do something in a quick manner often witohut thinking about it whereas to say "They carried him out of the room feet first." would mean that the person being carried is dead.
"Feet first" means "dead," (From a body being carried or rolled out horizontal.)
Nothing. You may be thinking of the idiom "plant your feet," which gives you the image of your feet rooted in the ground so you don't move.
To drag your feet is to move slowly. "Don't drag your feet" means hurry up.
To drag your feet is to move slowly. "Don't drag your feet" means hurry up.
It means you are looking to move, to live somewhere else.
Shuffling your feet means not acting quickly on something. Example: You're shuffling your feet when you should be making a decision.
It means she cant dance well, and the idiom is wrong, it should be two left feet.
"Dive in head first" is to rush into a situation without thinking.
This is not an idiom but a metaphor. They are comparing the "craze" to a wave that sweeps you off your feet and carries you along with it. "Craze" is a slang term, however, meaning a popular fad.
It is not an idiom, it is fact. A hose can be used for a water level with hundreds of feet between the two points. As long as two bodies of water are connected somehow, they will be at the same level. As an idiom, it would mean a person tends to seek out people they feel are equal or have the same point of view.
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.