Butterfly kisses are what your little girl gives you when she puts her eye close to your cheek and flutters her eyelashes so that they brush your face. It's a loving, cute kiss; not an erotic act.
There was a song written about this by a guy named Bob Carlisle a few years ago. No matter how hard your stony little heart might be, I dare you to listen to that song and not get just the wee bit quivery. If not today, then some day soon.