The act of ejaculating so much onto a woman that she is completely covered in semen. In this sex practice, however, unlike bukkake
the female will not clean herself off (She won't be able to if you're a real man, anyways) and will become wrapped in a 'Cocoon' of hardening cum, unable to move, or even breathe.
The male (Or Herm) will do this Solo and will repeat this process onto the cocooned victim as much as possible until the female is not visible.
Suggested to practice against walls, floors, or even ceilings (The last being most difficult. Like standing, the cum will drip downwards thanks to gravity and only a slight portion of her will be covered.)
The act of doing this to multiple persons is called Hive Cocooning