Inside Shit 

An inside joke or private reference that never successfully makes it on Urban Dictionary.

Votee: SallyHermaned - When my sista Sally does that thing she does! #lmao
Voter: Don't allow. Wow, what an Inside Shit. Brainfart much?

Inside Shit by DeiGoiCah July 28, 2018

Are you shitting inside of me? 

When something is so unbelievable that the phrase "are you shitting me?" is not enough. It demonstrates that the action taking place, or the event being described is so monstrously horrific that it literally feels like someone is taking a massive shit inside of your chest. Basically, the worst feeling ever is happening, and at this point you're questioning why the fuck.

Douche: LOL I TOTALLY RAPED THIS CHILD WITH A PITCHFORK OF AIDS
Person: ...are you shitting inside of me?
Douche: ...No? But I could be.

Are you shitting inside of me? by JustSomeFaggot September 10, 2010