On top of that, our lips are associated with a disproportionately large part of the brain. Sex researcher Alfred Kinsey even reported that some women could reach orgasm from prolonged deep kissing without genital contact. While this sounds unusual, it likely has to do with the way our lips are packed with sensitive nerve endings so that even the slightest brush sends a cascade of information to our brains that often feels very good. Although we often don’t think of them in this way, our lips are the body’s most exposed erogenous zone. Read More from this Author HERE