A (real) toad-strangler American singular noun informal
Used to implly a very heavy rain
It's dangerous to drive in a toad- strangler.
We can't go on a picnic today because it's a real toad-strangler out there.
Rainy, wet weather
If the heavens open, it starts to rain heavily.
Used to mean that it is the high humidity that makes a person uncomfortable rather than the degree of heat
Intensely hot and irritated
Wonderful weather, particularly on a day when an outdoor event is scheduled
The origin of this expression is not clear.
To do domething based on your emotions rather than for rational reasons
I can't believe that Tom beat his classmate. He's always the one who let his heart rule his head.