to get angry
It is actually an idiom.
An idiom is a phrase that makes no sense unless you know the definition. Can a nose actually run somewhere? No, so this is an idiom.
It's A SHOULDER TO CRY ON. It's not really an idiom -- the person is offering to let the other person cry on them, as in offer them sympathy.
This is not an idiom. It actually means to stretch your arms and legs. To take a break.
he suddenly turned up (to appear, emarge)
This is not an idiom. An idiom is an expression whose meaning cannot be deduced from its elements. To go through fire and water for someone is easily understood to mean to make a special effort and to undergo difficulties for that person's sake.
No. There is an idiom Spring into action, meaning to get active immediately, and there is an idiom Spring out, meaning to appear suddenly. Use one or the other.
The idiom, "Take his temperature" is an idiom because his temperature is not really being taken away from him, it is actually being measured. In fact, the temperature of his body is being measured - that is your answer.
Does it make sense if you translate it literally? If it does, it's not an idiom. Have you ever seen anyone actually hit a ceiling? No, so this must be an idiom.
Those are three unrelated words. An idiom is a PHRASE that seems to mean one thing, but actually means another.
An idiom is something that does not mean what the phrase says literally, so yes. You can't actually laugh your head off.
this is actually just an idiom and the number is not actually accepted in open social circles