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. What on earth provoked that tantrum? I guess Molly had a rush of blood to the head or something. Hey, I know you've had a sudden rush of blood to the head about all of this, but don't call the company in anger.
Farlex Dictionary of Idioms. © 2024 Farlex, Inc, all rights reserved.
a rush of blood
or a rush of blood to the head
If you have a rush of blood or a rush of blood to the head, you suddenly do something foolish or dangerous which you would not normally do. It was a rush of blood by the United goalkeeper that was to cost them the game. I don't know what made me say it — I must have had a sudden rush of blood to the head.
Collins COBUILD Idioms Dictionary, 3rd ed. © HarperCollins Publishers 2012
a rush of blood (to the head)
a sudden attack of wild irrationality in your thinking or actions.Farlex Partner Idioms Dictionary © Farlex 2017