Some Idioms

Pink elephants   This term refers to hallucinations or strange imaginary things seen by people as a result of heavy drinking or the use of narcotics.  "No more drinks for me please, otherwise I'll be seeing pink  elephants!"  

Silver spoon   To say that someone was born with a silver spoon in their mouth means that their family is very rich and  privileged.  

Scream blue murder   Someone who screams blue murder shouts or complains very loudly as if something very serious has happened.
"The crowd started screaming blue murder when the football match was interrupted."  

Black sheep   The black sheep of the family is one who is very different from the  others, and least respected by the other members of the family.  

bag of bones   To say that someone is a bag of bones means that they are extremely thin.
"When he came home from the war he was a bag of bones."

The honeymoon is over   To say that the honeymoon is over means that the initial period of friendship and cooperation between people, groups or organizations has ended.
  "He was elected only six months ago but the honeymoon is already over."

 Know someone/something inside out.   If you know someone or something inside out, you know them  very well.  Sue and Anne have been friends since childhood.  They know each other inside out."

Like a bear with a sore head   If someone is behaving like a bear with a sore head, they are very irritable and bad-tempered.  "When his team lost the match, Brad was like a bear with a sore head."   

The bee's knees    If you say that someone or something is the bee's knees, you think they are exceptionally good.  "Julie thinks she's the bee's knees" means that Julie has a high opinion of herself!  

Wait for the cat to jump   If you wait for the cat to jump, or to see which way the cat jumps,
  you delay taking action until you see how events will turn out.
  "Let's wait for the cat to jump before we decide." 

 At the eleventh hour  If something happens at the eleventh hour,  it happens when it is almost too late, or at the last possible moment.
 "Our team won after they scored a goal at the eleventh hour."

 Five o'clock shadow  This expression refers to a patch of stubble on the face of a man who hasn't shaved for at least a day.
 "He looked tired and had a five o'clock shadow."

Be in seventh heaven  If you are in seventh heaven, you are extremely happy.
 "Every time she wins a match she's in seventh heaven!"  

 Put your feet up   When you put your feet up, you sit down and relax.
 "You must be tired.  Come in and put your feet up."  

Happy-go-lucky   If you are a happy-go-lucky person, you are cheerful and carefree
  all the time.
  "He's a happy-go-lucky sort of guy - always in good humour."  

Have a ball   If you have a ball, you enjoy yourself very much.
  "The party was great.  We had a ball."

 The apple of your eye.  If somebody is the apple of your eye, this means that you like them very much :
 "My grandson is the apple of my eye".

Go bananas  If someone becomes very emotional and starts behaving in a crazy way, they go bananas.
 "If you announce that you're going to drop out of school, your parents will go bananas!