The term 'smack in the face' can be broken down into three separate words: SLAP (4 letters), SMOOCH (6 letters), and KISS (4 letters). A SLAP is a physical gesture of aggression, usually done with an open hand. A SMOOCH is a more affectionate gesture, usually involving two people pressing their lips together. A KISS is a sign of love and affection, often done with closed lips. All three of these terms are used to describe different types of physical contact between two people.