Refers to a person who engages in genital mutilation by sticking a firecracker in ones urethra. The firecracker is then lit and once it explodes it mutilates the flesh on the head of the penis causing it to look like a Demogorgon from stranger things.
Freind 1: Yo did you see that new vid on LiveLeak?
Freind 2: Yeah man, I cant believe he put a firecracker in his dick, he got a Demogorgon Dick now.