"Until the cows come home" - for a very long time; forever

"Up for grabs" - available for anyone; not yet claimed

"Up in arms" - very upset or angry about something; protesting strongly

"Upper Echelon" - upper formation; the higher level of any group; high ranked officers; bosses, managers, or CEO's

"Walk the line" - to maintain a fragile balance between one extreme and another: good vs. evil, sanity vs. insanity, decency vs. decadence; to behave; to abide by the the law and/or to abide by moral standards; to walk a straight path of decency by following the rules

"Watching paint dry" - very dull or boring

"Weather the storm" - to experience and survive a storm; to experience something and survive it; to continue to exist and not be harmed during a difficult period; to be all right despite experiencing serious problems or great difficulties

"What's good for the goose is good for the gander" - something that you say to suggest that if a particular type of behavior is acceptable for one person then it should also be acceptable for another person; if it is good for you then it is good for me; what is good for one is also good for another; what is good for a man is equally good for a woman; what men can have or do then so can a women have or do; both genders should be treated the same way and not be subjected to different standards

"(Pass / Came through) With flying colors" - with great success; easily and excellently

"Worst kept secret" - not really a secret; everyone knows about it

"Worth one's salt" - good or competent at the job or profession specified; efficient and capable; worth (in productivity) what it costs to keep or support one; from the Roman practice of paying wages in the form of bags of salt

"Zeigarnik Effect" - a theory, which states that people tend to remember uncompleted or interrupted tasks better than completed tasks