25 Things They Should Have Taught Us In School

16. Flossing is extremely important, arguably more so than brushing, and your dentist is going to be able to tell when you go and you’ve only actually flossed for approximately three days before your appointment.

17. There is nothing unhealthy, weird, or dirty about masturbating.

18. Everyone should have condoms at their disposal, and no one is a slut or gross for having them.

19. Traveling is very expensive, but there are many ways to make it less so. There are dozens of websites which will allow you to find cheap boarding, discount flights, transportation shares, and other people who speak your language.

20. The metric system is a thing you should be vaguely familiar with, even if you live in stubborn, standard America.