My first blow job was from a man, but I didn't know it was a man. That's where that comes from. It's based on personal experience. It happens to a lot of people.
This is certainly one of the more... intriguing interviews that I've read in a long time. Brett Ratner, director of the upcoming Rush Hour 3, discusses blowjobs from men pretending to be women, the difference between being a "bear" and a "cub" and how Britany Spears is "complex".
I'm as confused as you why he was even having an interview with The Advocate in the first place, but there you go.