You hug your friend. You kiss your friend on the cheek. You plop a big, wet kiss on your friend's mouth. Wait, what was that last one? Kissing one's friends isn't as uncommon as you might think. Many ...

Kisses add depth and meaning to our interactions. The peck is a quick, light kiss on the lips or cheek. It's a universal sign of affection, shared between friends, and family, or a gesture of greeting ...