Rob Kardashian posted a picture of Rosamund Pike as psychopath killer Amy Dunne in “Gone Girl” along with the caption, “This is my sister kim, the b*** from Gone Girl,” on his Instagram on Sunday.

The horrible post has brought on several theories.

As the shocking post was the only one the “Keeping Up With the Kardashians” star has made, many have come to believe that the reality star was hacked, according to Refinery 29. Whether he was actually hacked or not has yet to be confirmed.

Another theory is that the 28-year-old was simply joking, which is a possibility since Kim Kardashian recently decided to go for a blonde bob, a very similar haircut to Pike’s character in the movie.

“He has a funny sense of humor and posts weird things and then deletes them,” a source close to the Kardashian family told People.

The insider added, “It’s just him.”

There is speculation that Rob Kardashian, who has struggled with his weight, hasn’t been in the best place for a while now, which may be another reason for the Instagram post.

“He’s been depressed and just a bit off in general,” the source stated.

The insider continued, “But he has always been this way. He just can’t lose the weight and he doesn’t try — he just sits around.”

Sister Khloe Kardashian has agreed to that Rob has definitely changed.

“I just feel, especially over the last year, Rob has become very introverted and has a kind of social anxiety. He's definitely not at his happiest place that he once was, and I know he can get to that happy place and he will,” explained Khloe.

She added, “We all kind of get to a place where you don't know where to go in life or whatever, so I think it's important for him to know that he always has people to lean on and it's not unnatural for people to not know even where to begin. It's a growing process. ... I will always be his No. 1 supporter."