1. Last straw

The final problem in a series of problems.

2. Let sleeping dogs lie

Meaning – do not disturb a situation as it is – since it would result in trouble or complications.

3. Let the cat out of the bag

To share information that was previously concealed

4. Make a long story short

Come to the point – leave out details

5. Method to my madness

An assertion that, despite one’s approach seeming random, there actually is structure to it.

6. Miss the boat

This idiom is used to say that someone missed his or her chance

7. Not a spark of decency

Meaning: No manners

8. Not playing with a full deck

Someone who lacks intelligence.

9. Off one’s rocker

Crazy, demented, out of one’s mind, in a confused or befuddled state of mind, senile.

10. On the ball

When someone understands the situation well.

11. Once in a blue moon

Meaning: Happens very rarely.

12. Picture paints a thousand words

A visual presentation is far more descriptive than words.

13. Piece of cake

A job, task or other activity that is easy or simple.

14. Put wool over other people’s eyes

This means to deceive someone into thinking well of them.