Tennessee State University student: Damn professor, you must have graduated from an amazing university to be such a brilliant lecturer.
Fisk University student: Well actually, I haven't graduated from college yet, I am a freshman at Fisk University, I volunteered to help teach the hopelessly illiterate, and they sent me here.
Tennessee State University student: That explains alot. (gets on floor and grovels.) I am not worthy.
This is a cool nerd way of saying "Fuck em". But only if you really hate someone enough to slam their head in a car door. A term coined from a scene in Netflix series "Daredevil" where antagonist "Wilson Fisk" did just that after he was utterly embarrassed by his victim in front of his girlfriend. Or you can say it just to be cool! Either way it's a disregard to the subject in question. Try it out next time.
*Alternatively this can also be a subtle way in describing harming someone very badly OR crushing their head in a car door.
1.
Karen: I wonder what those two are up to over there. A drug dealmaybe?
Foggy: Fisk em Karen we have better things to do.
*Karen: What do you plan on doing to them?
Murdock: I'm gonna Fisk em.