Oh shiiizz!!

Now that ABC is working on Glass House -- a reality show super similar to Big Brother -- CBS is calling BS!!

In Glass House, contestants are stuck in a house, filmed 24/7, and what do ya know - eventually voted off one by one!! Yeah, definitely sounds like Big Brother to us!!

CBS firmly declares:

In the strongest possible terms, we must admonish ABC and anyone involved in the development or production of Glass House that they will be acting at their own peril if they continue to proceed in this manner.

YIKES!!!

Sounds like they're taking it personally!!

Well... maybe they are... since EIGHTEEN former BB staffers are working on the new show.

Ooooh.... snap!