This maybe either because they are your best friend and you like to annoy them
Or because they are just an annoying asshole.
It is most likely that the person calls you little shit
Dude 1 - "Bro don't invite Tyler to our sleepovers again, he fucking clogged the toilet after he took a shit"
Dude 2 - "Of course he did, he has big shit vibes"
1. A declarative phrase often used by losers to exclaim, in belligerent braggadociousness, some perceived advance or victory.
2. A phrase used by boheimillectuals and nerdy English majors, often ironically, to mock the ultimate futility of any personal success or advance - a phrase declared in sardonic self deference corrupted by secret ambition.
Spoken:
All you suckers can eat my hot lunch because I'm big shit now bitches now that I've dirty sanchezed both the Bush twins.