a life coach whose only method of motivation is cutting or stabbing you with a knife - typically hired from the deep recesses of craigslist
"I really do NOT want to finish my reading assignment. Hey, Maury Povich is on TV," says client.
"I'ma fuckin cut you bitch," says knife coach. "YOU READ OR YOU BLEED." *Licks Knife*
"Well I guess I'll just finish up this reading assignment."