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.
Difficult to choose between two alternatives.
I am always caught between two stools when choosing what to buy at a bookstore.