Your girlfriend and I have been close friends for a really long time, and she tells me all sorts of things. For example, she tells me how you are a HUGE perv, and how she has a suspicion you have a crush on me.
One night, when I crawl into bed, only to find you spying on me. You ARE some sick, nasty pervert, aren't you? Your girlfriend is going to be so fucking pissed. Luckily for you, I happen to think you are kind of hot, and from everything your girlfriend has told me, you have a huge cock. So go on, get your cock out for me and show me how you jerk it.