This is a sexual action which happens in the instance of a man "coping head off" a female, or in other words when a male's penis is licked or sucked by a female. When such a sexual activity is occuring, the male pulls the female towards him, so that the penis is fully in her mouth and the man has successfully blown, therefore the semen will be excreted from the female's nose by passing through the naval cavity.
see also donkey slap - is as fun as the white dragon.
A man recieves a blow job from a woman whilst standing up. Woman is on knees. Dude skeets off in bitches mouth and then takes a step back and double neck chops the slut prompting her to spew out the jiz. Similar to a Dragon spewing out white flame.
"I just got done blowning off in your moms mouth and gave her the White Dragon. Now im gonna go take a dump."