What is the word for phrases such as:
"run it up the flagpole and see who salutes"
"let's bottom line this"
"if the shoe fits - wear it"
"too many chiefs, not enough Indians"

Those obnoxious phrases everyone says - and we all know what they mean - but we hear too often.

Thank you.

Chiefs/Indians and Shoe fits are adages, but flagpole is from Madison Avenue admen meaning, "Let's see if this works/gets attention. I am not sure about Bottom line, but it obviously has its origins in the business world; I would just call it a slang phrase. Bottom line and flagpole could be considered business jargon that has passed into common usage. All may be considered idioms.

Or you might be referring to the term "cliche" which means an expression so often used that its original power has been drained away - or an over-used expression.

In fact, wikipedia.org actually refers to Run it up the flagpole as a cliche.

Slang phrases and jargon can become cliches if used often enough.

"That's strike three" meaning that you are out of chances is now a cliche. It was baseball jargon. I have seen people who wouldn't now which end of a horn to blow into talk about a "gig" that they had. The ad slogan for the telephone company, "Reach out and touch someome", was adapted by police; "reaching out" to someone meant (means?) "get into contact with a particular person to find out some information." (Usually the other person is a contact in the department itself or someone who has a contact with someone who can give information. It's like networking in code.)