Buzz·Posted on May 23, 201333 Unwritten Rules Everyone Needs To FollowThis is the most important thing you'll read all day.by Dave StoperaBuzzFeed StaffFacebookPinterestTwitterMailLink 1. When riding the escalator, stand on the right and leave the left open for passers. Don't do this. Via vanishingnewyork.blogspot.com 2. CHEW WITH YOUR MOUTH CLOSED. NO ONE NEEDS TO HEAR YOU CRUNCHING. Via mommygiggles.com 3. Don't do this if you're next in line. Via printerinkcartridgesblog.printcountry.com 4. Wearing headphones in public is code for "Don't talk to me." nyulocal.com 5. Never be a dick to the person serving you food. Via abcnews.go.com 6. Don't stop in the middle of a busy sidewalk. Via today.com 7. Turn these off if you're not the only person on the road. Via auto-gadgets.co.nz 8. Always let people out before you enter. Via discoveringsaopaulo.com 9. Especially if it's an elevator you're entering. Via nytimes.com 10. Always leave a one-urinal buffer zone. Via strikegently.com 11. Never do this on a busy bus or train. Via flipmeme.com 12. Avoid "K" AT ALL COSTS. 13. Be quiet when other people are asleep. That means more than not talking — not slamming doors, drawers, etc. Via huffingtonpost.ca 14. Don't get in another person's space like this. 15. Put things back where you found them. Via cavemancircus.com 16. Don't think you're clever by doing this. Via addfunny.com 17. Replace toilet paper after you finish it tellus360.com 18. Spit your gum out in the trash. Via reddit.com 19. Hold the door when you walk in after someone. Via Facebook: awkwardly-holding-the-door-open-for-someone 20. Never leave a tube of toothpaste looking like this. Via imgur.com 21. Please don't do this. Via smacksmog.com 22. Just open your bag of chips. There is no need to delay, it will still make noise. Via Facebook: The-kid-in-class-trying-to-open-a-bag-of-chipsquietly 23. Never do this to your roommates. Via woolyal.com 24. Never be that person with a cart full of groceries in the express lane. Via cbsnews.com 25. Don't be the big plug guy. Via pointlessreblog.tumblr.com 26. Or be this person on Facebook. 27. Never lock your bike like this. Via copypast.ru 28. The last piece of gum in a pack always goes to the person who bought it. Via 1000awesomethings.com 29. STOP TEXTING WHILE YOU SHOULD BE DOING SOMETHING ELSE. Via nj1015.com 30. Don't be lazy with shopping carts. Via worldwideinterweb.com 31. Never finish your roommates' food. Or just never eat it. Via college.biggirlssmallkitchen.com 32. Phone conversations do not need to be screamed. Via madamenoire.com 33. COVER YOUR MOUTH WHEN YOU COUGH OR SNEEZE. Via redhookcentralschools.org Hat tip to this Reddit thread for the inspiration.