have ... in one's stomach = You can use this phrase when you are excited or even in love. It may also represent a sense of fear or anguish.
have butterflies in one's stomach.
get on your .... = someone or something really irritates you.
get on your nerves.
cry your ... out = mourn inconsolably and cry till you drop, or until you no longer have any tears left.
cry your heart out.
Can you tell us idioms about having fun?
have the time of your life / take it easy / have a ball / have a blast / chill out
close to your .... = something or somebody is important to you and that you are very interested in it/that person.
close to your heart.
Can you tell us idioms to express understanding?
shed light / get it / get the message or picture / figure something or someone out
feel it in your .... = to have a strong feeling about something.
feel it in your bones.
have a change of ..... = you’ve changed your mind about something.
have a change of heart.
Alternatively, you might say to a person who is irritating you "cut ....!". That is, to stop.
cut it out!
under the .... = you are feeling ill (mentally or physically).
under the weather
cost ... = something is pretty expensive
cost an arm and a leg.
get ... = You might say this when a person has upset you want him or her to go away and leave you alone.
get lost!
hold your .... = take it slow, and reconsider before acting
hold your horses.
eat your ... out = This expression is usually an exclamation that tells people they should be envious.
eat your heart out.
Rain heavily.
Raining cats and dogs.
When ... fly
If someone says ‘’I’ll do it when pigs fly’’, it really means that they will never do it.
get cold .... = a person has become nervous or afraid of doing something that was already planned.
get cold feet.