1. Tape their nipples. blog.oregonlive.com See? Even that nice lady is confused. 2. Get running-themed tattoos. runnersworld.com What's wrong with a nice butterfly or Celtic dragon? 3. Post race reports on Facebook. ronniekroell.com Or worse yet, tell you about every mile of their marathon while you're trying to eat your lunch from Five Guys. 4. Cry at the end of "Prefontaine." Sony Pictures Television And then get upset when people don't know who Prefontaine is. 5. Run Yassos. scratedesign.com Isn't that a type of frozen yogurt? Is that guy the owner? 6. Run fartleks. runblog.adamcondit.com What does this even mean? Do we even want to know? 7. Run in these things. lifeofjustin.com Is this a cult? 8. And these. borntorun.com Runners are just messing with everyone, right? 9. Drink kale smoothies for breakfast, but finish their run with a few pints at the local pub. stevestenzel.com Is beer REALLY "Nature's perfect recovery drink"? 10. Think running a Turkey Trot 5K on Thanksgiving morning is fun. methowvalleynews.com Watching the Macy's Parade and eating Grammy's homemade pumpkin bread is fun. 11. Get enraged if you call them a jogger instead of a runner. pinterest.com What's the difference? 12. Strap these things on their shoes so they can run on snow and ice. mainemomontherun.com Did God create humans with little sharp teeth on their feet? I didn't think so. 13. Watch marathons on TV. rockpapershotgun.com Was bowling too exciting? 14. Strike bizarre poses to make their Garmin pick up a satellite signal. nikeinc.com Everyone (except runners) knows this doesn't actually work. 15. Give directions in running mileage. signsbytomorrow.com "Trader Joe's is about a 5k that way."