To be under the gun: To be under pressure or stress.

To be up to one’s eyeballs in something: To have a lot of or too much of something.

To try one’s hand at something: To try something for the first time.

To bite off more than you can chew: To commit yourself to more than you can handle.

To burn the midnight oil: To be awake and doing something late at night.

To buckle down: To dedicate yourself to an activity, to work very hard and seriously at something.

To bite the dust: To break. To be no more. To die.

To be a pain in the neck: To be an annoyance, a difficulty, a hindrance.

To be between a rock and a hard place: To be in a position where you can’t do what you want to do because you’re caught between two options that are both difficult or disagreeable.

To not be playing with a full deck: To behave in an illogical or crazy way. To be crazy.

You scratch my back, I’ll scratch yours: Said about a situation in which two people can benefit from each other’s help. Each will do the other a favor in order to get what he or she wants from the other person.

To blow up at someone: To suddenly get very angry with someone and yell. To explode.

To turn in, or to turn in for the night: To go to bed.

To cut corners: To fail to spend the proper amount of money,effort, or time on something.

On a positive note: To talk about happier issues.

To be all about something: To be very interested or active in something. To like something very much.

To not have a prayer: To not have a chance or hope.

To be old hat: To be something someone is accustomed to.

To be at something: To engage or take part in something. Noticethat you can also say “keep at” something, meaning to continue to take part in something.

To be green: To be new or inexperienced.

To be a shoo-in: To be the best or most likely candidate forsomething.

To make someone’s day: To cause someone great happiness, joy,or pride.