Rob Reiner’s problem child, Nick, appeared in his own bizarre YouTube video where he feigned doing drugs and jokingly claimed he was going to kill a dog nearly a decade before he was charged with murdering his parents Sunday.

The 2016 amateur clip resurfaced this week as the 32-year-old son was accused of fatally stabbing famed movie director Rob Reiner and his wife, Michele Singer Reiner, inside their Brentwood estate.

In the bizarre video, Nick was pretending to be a music mogul named “Dddavid” as he walked around his ritzy neighborhood while an interviewer behind the camera asked him a series of questions in the mockumentary.

At one point, his younger sister, Romy, also shows up in the wacky, six-minute video as Nick attempts to answer a question with a barking dog in the background.

“I’m gonna go f—king kill that f—king dog,” he says, wearing a red hat and sunglasses, before a short clip of Baha Men’s “Who Let the Dogs Out” is mixed in.

It was Romy who found famed director dad Rob hacked to death on Sunday, and reportedly immediately pointed the finger at Nick.

In the decade-old video, Nick — who has been public about his drug use — was also shown smoking at one point before asking, “Where’d you get this weed?”

Later in the clip, it showed white powder being arranged on a tray to appear like drugs before he acts like he’s snorting it.

“You bought heroin off a transvestite?” a guy can be heard saying behind the camera after the video cuts to Nick and a second person walking down a street.

The clip shows Nick riffing on various mockumentary-style questions and attempting to interact with neighbors.

In a prophetic line, he raps, “And I don’t even care if anyone calls me a Sally because I’m a snail and I’m never gonna f—king fail and you know, you’re gonna have to bail me outta jail.”

Nick is being held without bail in an LA lockup for the murders of his parents.

A family source in reference to the video told People Nick “was always creative, but misguided.”

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“He grew up around Hollywood A-listers and their lifestyles and it didn’t seem to occur to him that any of that could be taken from him,” the source claimed.

“The hardest thing for Nick was following through on his ideas and doing the work he didn’t find exciting.”

The death of Rob Reiner, who directed famed films including “A Few Good Men” and “When Harry Met Sally,” and wife Michele sent shockwaves across Hollywood this week.

The couple’s other children, Jake and Romy Reiner, called their parents their “best friends” and asked the public to remember them for “the incredible lives they lived and the love they gave.”

They made no mention of Nick.