One time my fan asked me - "What kind of sex do you prefer?". Without any minds, i answered - oral sex. Why? Because it's a sign, that you open-minded with your partner, it's very important. And partners are trusting to each other... And make a pleasure for each other...Mouth - it's a part of our body, which one we usually not using, as another parts. But this part is very sensitive...Finally, tongue. You can take feelings of the partner, and partner takes yours...Taste.