I find this question quite difficult to answer.
Let me explain,sometimes what you like with someone,won't be the same you will like with somebody else.
Therefore,you will be willing to try new things easier with a stranger than with someone that you know,for the thought of what this person will think of you afterwards. Or not.
Is just me,or your desire changes,along with your mood,the person,environment and go on?
For me,a well groomed gent is a great start,not only in the business but in general and how about you?
What turn you on? Don't need to be too graphic.
Roll over.