Sex is something I really don’t understand too hot. You never know where the hell you are. I keep making up these sex rules for myself, and then I break them right away. Last year I made a rule that I was going to quit horsing around with girls that, deep down, gave me a pain in the ass. I broke it, though, the same week I made it – the same night, as a matter of fact.
– J. D. Salinger
The Catcher in the Rye. Holden Caulfield in Chapter 9.