You don't know shit about fuck

An extreme way to invalidate a person's opinion. It's a hardcore dis meant to bring the person it's directed at to complete silence.

Marven: This war is like fucking awesome yo!
Shanaynay: You don't know shit about fuck,asshole.
Marven:....................well damn.

by Crazyspirit October 23, 2007

you don't know shit from your asshole

To be oblivious or uninformed on a subject you are trying to create a dialogue about.

The fact you think the government faked the moon landing proves you don't know shit from your asshole.

by djstickyfing3rz April 3, 2015