Leslie Knope (Amy Poehler) and the original Tammy Swanson (Paula Pell), making a point with corn liquor. (Chris Haston/CHRIS HASTON/NBC)

Once again, “Parks and Recreation” has taught us some valuable life lessons. In this week’s episode, “Ron & Tammys,” most of those lessons related to financial and/or business matters. And we largely have the brilliant minds at Entertainment 720 to thank.

Here are the five crucial things we learned from Tom Haverford, Jean-Ralphio Saperstein and, to a lesser extent, Ron Swanson. What was your favorite life lesson from this week’s episode? By all means, share it in the comments.

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Lesson one: A piece of paper that says “I bought supplies 2007” is not a valid receipt.

Not when you’re Ron Swanson and subjected to a fake-tax-audit by your first ex-wife. Or, really, not ever.

Lesson two: During an NBA strike, it is possible to pay Roy Hibbert 75% of his salary to shoot hoops with Detlef Schrempf in your office all day.

Are Google’s HR experts in superfun perks cool enough to do that? No way. But at Entertainment 720, upper management thinks way outside the box.

Lesson three: Businesses need to generate revenue.

Apparently printing money with Tom Haverford’s and Jean-Ralphio Saperstein’s faces on it does not count as “generating revenue.” Technically.

Lesson four: Employees should be compensated appropriately.

At Entertainment 720, upper management understands that staff members who devote their energy to consistently sleeping all day deserve to make six figures. They also deserve complimentary iPads. If other companies realized that, maybe more Americans would have jobs ... working for soon-to-be bankrupt companies.

Lesson five: Don’t hit the party switch unless you mean it.

That’s actually not a piece of business advice. That’s just common sense. Seriously, Jello Shot.