The other day, I thought that I had a pimple on my tongue. It came out of nowhere: All of a sudden, I felt a tiny but hugely annoying little bump on the tip of my tongue. And then I proceeded to play ...

For years, people considered pimples something to get rid of — quickly and privately. People searched far and wide for quick fixes and ways to cover up a zit, including concealer (yes, even for men), ...