Blackbelt mill

n (plural Blackbelt mills)

1. Corrupt martial arts dojo: a martial arts school that is run by a fraudulent instructor with dubious skill and shady business ethics; hands out blackbelts like they were free samples at a costco.

Dude, I just beat up this black belt the other day...I must have some mad fighting skillz..

Nah, dude you suck...the kid probably got his belt from a Blackbelt mill...probably got it after two months of training, and his instructor doesnt even know martial arts cus hes a corrupt peice of shit.....so congratulations....