This isn’t government we’re watching; this is junior high.

It’s unclear where the adults are, but they don’t seem to be in Washington. Beyond the malice of the threat to shut down the federal government, averted only at the last minute on Friday night, it’s painful how vapid the discourse is and how incompetent and cowardly our leaders have proved to be. A quick guide:

• Democrats excoriated Republicans for threatening to shut down the government, but this mess is a consequence of the Democrats’ own failure to ensure a full year’s funding last year when they controlled both houses of Congress.

That’s when the budget should have been passed, before the fiscal year began on Oct. 1. But the Democrats were terror-stricken at the thought of approving spending bills that Republicans would criticize. So in gross dereliction of duty, the Democrats punted.

• Republicans say they’re trying to curb government spending and rescue the economy — but they threatened to shut down the government, even though that would have been both expensive and damaging to our economy.

The shutdowns in late 1995 and early 1996 cost the federal government more than $1.4 billion, the Office of Management and Budget reported at the time. Much of that sum was for salaries repaid afterward for work that employees never did because they were on furlough. There were also lost fees at national parks and museums: tigers must be fed at the zoo, even if nobody is paying to see them.