During the act of getting head, right before you're ready to ejacultate, you force your dick so far down their mouth that when you shoot your load it is choked on and then expelled, through their nose. At this point, THIS IS THE CRUCIAL PART, you pull out and drive their face into your knee causing them to get a bloody nose.
This will result in semen dripping from the nose with a river of blood following, giving that nice, red, fire look.
My woman wanted to try something new so I gave her a flaming dragon.
The flaming dragon is the best way to say, "Get out of my life, I've found somebody better and you never will because your nose looks hideous!"