A turn on is something that makes specific groups of
people sexually stimulated ( horny ). Also known as fetishes,
people have very different turn ons and while some may be
music or clothes some people might like their sexual partner to be aggressive towards them during/before intercourse. The more dark and aggressive type of fetishes are called BDSM, which stands for Bondage, Discipline, Domination, Submission, Sadism and Masochism