Swimsuits are on sale, your mom's on your case about summer reading (oops) and the smell of pumpkin-spice-everything is practically already in their air. With back-to-school season fast approaching, Twitter has some useful lessons to get you back into the groove -- and to help ease the pain.

Brother and sister duo @Monday_Mayhem tweeted out a request on Monday morning asking current and former students what major life lessons they learned in school with the hashtag #IfAnythingSchoolTaughtMe. Here are 17 of the truest and funniest tweets:

These three words are the truth

That school nurses have a secret weapon

That procrastination is possible...

...but not advisable.

Seriously guys, don't procrastinate

Advance planning is the key to a stress-free life.

This person has the right idea

#DontProcrastinate

To be chill

That school dress codes sometimes make no sense

To be nice to the smart ones...

That textbook phrasing is memorable

That people are bashful in acrobatic ways

And people are also secretive in acrobatic ways

That cleverness is only useful sometimes

That we will always find ways to misuse calculators

That Scantron tests instill fear in the bravest souls

That Cindy is going to have a lot of fruit salad

To bribe your teachers with electronics?

Don't actually bribe your teachers with electronics.

And even gym class has its benefits