Smart IdiomsA hot potatoSpeak of an issue (mostly current) which many people are talking about and which is usually disputedA penny for your thoughtsA way of asking what someone is thinkingActions speak louder than wordsPeople's intentions can be judged better by what they do than what they say.Add insult to injuryTo further a loss with mockery or indignity; to worsen an unfavorable situation.An arm and a legVery expensive or costly. A large amount of money.At the drop of a hatMeaning: without any hesitation; instantly.Back to the drawing boardWhen an attempt fails and it's time to start all over.Ball is in your courtIt is up to you to make the next decision or stepBarking up the wrong treeLooking in the wrong place. Accusing the wrong personBe glad to see the back ofBe happy when a person leaves.Beat around the bushAvoiding the main topic. Not speaking directly about the issue.Best of both worldsMeaning: All the advantages.Best thing since sliced breadA good invention or innovation. A good idea or plan.Bite off more than you can chewTo take on a task that is way to big.Blessing in disguiseSomething good that isn't recognized at first.Burn the midnight oilTo work late into the night, alluding to the time before electric lighting.Can't judge a book by its coverCannot judge something primarily on appearance.Caught between two stoolsWhen someone finds it difficult to choose between two alternatives.Costs an arm and a legThis idiom is used when something is very expensive.Cross that bridge when you come to itDeal with a problem if and when it becomes necessary, not before.Cry over spilt milkWhen you complain about a loss from the past.Curiosity killed the catBeing Inquisitive can lead you into an unpleasant situation.Cut cornersWhen something is done badly to save money.Cut the mustard [possibly derived from "cut the muster"]To succeed; to come up to expectations; adequate enough to compete or participateDevil's AdvocateTo present a counter argumentDon't count your chickens before the eggs have hatchedThis idiom is used to express "Don't make plans for something that might not happen".Don't give up the day jobYou are not very good at something. You could definitely not do it professionally.Don't put all your eggs in one basketDo not put all your resources in one possibility.Drastic times call for drastic measuresWhen you are extremely desperate you need to take drastic actions.Elvis has left the buildingThe show has come to an end. It's all over.Every cloud has a silver liningBe optimistic, even difficult times will lead to better days.Far cry fromVery different from.Feel a bit under the weatherMeaning: Feeling slightly ill.Give the benefit of the doubtBelieve someone's statement, without proof.Hear it on the grapevineThis idiom means 'to hear rumors' about something or someone.Hit the nail on the headDo or say something exactly rightHit the sack / sheets / hayTo go to bed.In the heat of the momentOverwhelmed by what is happening in the moment.It takes two to tangoActions or communications need more than one personJump on the bandwagonJoin a popular trend or activity.Keep something at bayKeep something away.Kill two birds with one stoneThis idiom means, to accomplish two different things