Simple - one must strive not simply to be A shit but to be THE shit - The plutonic ideal of shit, the perfect shit from which all other shits are derivitive. Anything less is a failure. So following this logic.
“You ain’t shit” = You are invalid from the rubric, so below par as not to be mentionable.
“You are shit” = Acknowledgement that you are shit of average or middling status but with the implications that vast improvement is nessisary because you are still a failure.
“You are not the shit” = More directed pointed reminder that you are far below the goal of being THE shit and maybe are overestimating yourself.
Simple - one must strive not simply to be A shit but to be THE shit - The plutonic ideal of shit, the perfect shit from which all other shits are derivitive. Anything less is a failure. So following this logic.
“You ain’t shit” = You are invalid from the rubric, so below par as not to be mentionable.
“You are shit” = Acknowledgement that you are shit of average or middling status but with the implications that vast improvement is nessisary because you are still a failure.
“You are not the shit” = More directed pointed reminder that you are far below the goal of being THE shit and maybe are overestimating yourself.