in humor 15 Times We Learned the Answer to Life in a Public Restroom by Mary McCaw November 29, 2016, 12:00 pm 10. This genius even offered up this free advice on putting foreign objects in your mouth (don't). 11. You can also learn a thing or two about etiquette… 12. And how to behave when you encounter something… ahem… unusual. Written by Mary McCaw Mary is a freelance writer and editor. She's based in San Francisco, but lately, home is wherever her suitcase is. If you really are what you eat, she is at least 50% pizza.