The idiom "lost on" means to be confused, puzzled or unable to understand something. It can also mean to take no notice of something or not care about it.

The idiom "call of duty" refers to an individual's obligation to perform a task or fulfill a responsibility, often associated with serving the public good or one's country.

The idiom "your call" is used to indicate that the speaker does not have an opinion on a particular matter and that it is up to the listener or decision-maker to make a choice.

The idiom "back to basics" means going back to the original or basic principles of something, usually in order to understand it more fully or solve a problem. It can also mean starting over or beginning again from the beginning.

"Come hell or high water" is an idiom that means no matter what happens, someone will do something or be there for another person. It's a phrase that indicates a commitment to stand by someone through good times and bad.