I'd long ago come to expect poor journalism, but plain stupidity makes one understand why revenues in your industry continue to fall off a cliff.

So, slavers got some, and plain stupidity took a few more.

It could be, reflected Alucius, just plain stupidity.

She criticised it as "arrogance, ignorance and plain stupidity."

With them my need to seek solace was plain stupidity.

Now, this is plain stupidity, I thought, and it was perhaps my fifteenth act of plain stupidity.

But there are also just plain stupidities.

The strongest revisionist force in human history is ignorance and plain stupidity.

But the rest of the affair was plain stupidity!

The attempt to fire the tent was plain stupidity.