A Rush of Blood to the Head - Idioms by The Free Dictionary
a (sudden) rush of blood (to the head) (redirected from A Rush of Blood to the Head)
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a (sudden) rush of blood (to the head)
A sudden feeling of excitement or anger that causes one to act in unexpected ways. It must have been a sudden rush of blood to the head that made Gary lash out at Ron, because he's usually so calm.