The simultaneous ejaculation of at least 17 penises in one, tiny room; normally aimed at the face of a young, willing whore who is starving for attention. A jizztastrophe has taken place when there is an abundance of sperm covering not only the face and body of the girl, but also the ceiling, the walls, and possibly the family dog. Jizztastrophes have ruined lives, destroyed homes, and ripped apart families.
When the FBI arrived, there was clear evidence of a jizztastrophe.
After the jizztastrophe, the whore was covered in so much semen it took the dog 9 hours to lick it off.