Oh, Ray J, do NOT mess with Kim Kardashian's BFF Jonathan Cheban — and stop talking about that sex tape already!

The Celebrity Big Brother star discussed on the Jan. 3 season premiere of the Britain series where people might recognize him from, and naturally, he didn't say Sharknado 3: Oh, Hell No!

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“You might know me for a lot of things — music, reality TV, oh, and you might also know me for my d–k,” he explained. “People wanna know about the sex tape with me and Kim Kardashian. Order it, put some money in my pocket. Y’all still j–king off to the sex tape? Enjoy!”

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Jonathan, 42, a self-proclaimed food God, did not appreciate this, and made that very known in the Twitterverse.

"What a loser #CBB (you know who I'm talking about). See you soon London," he wrote.

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Kim, 36, dated the "One Wish" singer, 35, in 2006 and she shot to fame after their intimate home video was made public. Both parties have moved on from the relationship; Kim is now married to rapper Kanye West, 39, and they have a son and a daughter together — three-year-old North and one-year-old Saint. Ray J married Princess Love, 32, in 2016.

According to The Daily Mail, Jonathan will return to the Celebrity Big Brother house to face-off with his best friend's ex, after leaving just six days into the series in 2016.

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"This is set to be explosive. Jonathan is fiercely protective of Kim so for the first time one of her nearest and dearest is going face to face with Ray J it's all going to kick off!" a source told the outlet. "Ray J has no idea that Jonathan might be coming into CBB and this will totally unsettle the house."

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This is going to get interesting.

See who else Kim has dated by scrolling through the gallery!