20 Things You Should Never, Ever Share

16. Nail clippers

More gory revelations from the world of dermatology here. Apparently, sharing your nail clippers can lead to nail fungus. And Dr. Bethanee J. Schlosser, associate professor of dermatology at Northwestern University’s Feinberg School of Medicine, has warned that there’s also the potential risk of infections that are spread through your blood. Yikes.