Does she really expect us to buy into this?! Because we're not!

Blac Chyna is threatening to sue if a sex tape she made with ex-boyfriend Tyga back in the day is released, TMZ reports. The former stripper's lawyer Walter Mosley told the site that she would go after anyone who was shopping it around "with a vengeance." Sure she will! We all know that it's Chyna herself shopping the X-rated vid around to score a paycheck and get revenge on Kylie Jenner for stealing her man.

We wonder how fiance Rob Kardashian feels about this? Maybe he's so lovestruck that he doesn't see how obvious it is that his lady love is after fame and fortune, but you gotta know the rest of the K clan is hip to her game and making calls to make sure this tape never sees the light of day. We're just a bit surprised that Chyna didn't film herself and Rob doing the dirty, because that would have scored her way more of the big bucks than some nasty clip with T-Raww.

Nobody should be shocked by this!