pig out
 مثل خر خوردن

to eat greedily; to stuff oneself

EXAMPLE 1: Ted pigged out on hot dogs and hamburgers at the barbeque and then got a stomachache.

EXAMPLE 2: "Nicole, stop pigging out on cookies or you'll never be able to eat your dinner!"

out of this world 
 معرکه بودن طعمی یا کسی

delicious

EXAMPLE 1: Mrs. Field's oatmeal raisin cookies are out of this world!

EXAMPLE 2: Mom, I love your chicken soup. It's out of this world!

on edge

در حال عصبی شدن

nervous; irritable

EXAMPLE 1: Whenever Susan feels on edge, she takes several deep breaths and starts to feel more relaxed.

EXAMPLE 2: Ever since his car accident, Neil has felt on edge.
 

make a bundle 
 پول درو کردن

to make a lot of money

EXAMPLE 1: Bob's friend Charles made a bundle in the stock market and retired at age 45.

EXAMPLE 2: Sara made a bundle selling her old fur coats on eBay, a website where you can buy and sell used things.
 

just what the doctor ordered

 دقیقاً همون چیزیه که می خواستم

exactly what was needed

EXAMPLE 1: Martin wanted a hot drink after spending the day skiing. A cup of hot cocoa was just what the doctor ordered.

EXAMPLE 2: Our trip to Florida was so relaxing. It was just what the doctor ordered!
 

in a bad mood 
 ناراحت بودن

بابا حال و حوصله ندارم . . . .

unhappy; depressed; irritable

EXAMPLE 1: After her boyfriend broke up with her, Nicole was in a bad mood for several days.

EXAMPLE 2: I don't like to see you in a bad mood. How can I cheer you up?

Help yourself [to]

 از خود پذیرایی کردن

serve yourself

EXAMPLE 1: "Help yourselves to cookies and coffee," said Maria before the meeting started.

EXAMPLE 2: You don't need to wait for me to offer you something. Please just help yourself to whatever you want.
 

have a heart of gold

 بسیار مهربان و بخشنده بودن

to be very kind and giving

EXAMPLE 1:  Alexander has a heart of gold and always thinks of others before himself.

EXAMPLE 2: You adopted five children from a Romanian orphanage? You've got a heart of gold!
 

good thinking 
 فکری خوب ، فکر بکر

good idea; smart planning

EXAMPLE 1:  I'm glad you brought an umbrella - that was good thinking!

EXAMPLE 2: You reserved our movie tickets over the Internet? Good thinking!