This is a phrase that refers to your plastic credit or debit card. You either pay "in cash," "with a check," or "with plastic." Paying with plastic is how most people pay nowadays.
It means you do not have to pay for dinner,either it is free or someone else will pay for you. This idiom usually means the 'house' or restaurant owner will pay for not 'anyone'.
It can mean either you didn't pay enough attention, or you just didn't understand.
On the house means it's free, or that the person who says that will pay for whatever you got.
The idiom "listen closely" means to pay careful attention to what is being said or heard, typically to understand or discern something important or subtle. It implies a focused and attentive approach to listening.
They are implying that they have "killed" you - you are in big trouble with them, and they are going to make you pay for whatever you just did to them.
The idiom "shell out" means to pay a sum of money, usually unwillingly or with reluctance. It implies spending money on something, often more than anticipated or desired.
The idiom "pick up your ears" means to listen carefully or pay close attention to something being said. It's a figurative way of telling someone to be alert and actively engage in the conversation or situation.
The idiom for paying far more for an article than it is really worth is "to pay through the nose."
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.
"Sieve" is not an idiom. See the related link.