Your turn on is handcuffs and chains. You like being cuffed/chained to the bed, or cuffing/chaining your partner down. You love the pure ectasy of being in complete control... or letting someone else have complete control over you. Sex isn't sex without control.
When it comes to sex, you are a super genius. You have had a lot of experience, and sex interests you so you know a lot about it. You pride yourself on being a source of information and guidance to all of your friends.