Intensely arousing:
Breasts respond well to touch and kissing - take time to explore this highly sensitive area, but handle with care!
Stimulate the nipples in circular motions with the tongue tip, fingers or glans, or suck gently like a baby. Brushing nipples with palms or eyelids also work well.
Knead and stroke breasts with both hands during foreplay and intercourse. For variation, experiment with chocolate body paint and whipped cream.
Intercourse between the breasts is not only erotic, but also a pleasurable form of non-penetrative sex. It works well in different positions: man astride works best with big-breasted women; and woman on top for small-breasted women.