The Smiley face—we all know it. The universal yellow and black face with its signature upturned grin, a quintessential pop culture symbol, is officially 50 years old this year. Trademarked by French ...

Sure, it’s annoying when someone tells you to smile — but, regardless of your mood, it’s totally possible to have your nails smile for you (and that’s never annoying). Slapping a smiley face or two ...