The man who pulled a car with his penis is explaining why he went with the fiery hat on a hat for his recent stunt … revealing he’s not the first person to use his Johnson to jerk a car.

John Stephenson stopped by “TMZ Live” to talk about his recent dong-defying feat — he pulled a car weighing two tonnes 131 feet using only his member … and, he explained he wanted to do a truly original stunt to raise awareness about prostate cancer.

The Brit explains he — like us — figured pulling the car would be enough … but, it turns out another dude’s already whipped it out and yanked a whip down the street, so he needed another layer.

Stephenson immediately jumped to the idea of flames — a pretty extreme measure — to add his own flair to the situation … and, the stunt will now live on forever in the One-Eyed Wonder Hall of Fame (patent pending).

As for how the car didn’t stretch John’s Little Stephenson out like taffy … well, you’ll just have to watch “TMZ Live” to hear that answer for yourself!