It looks as though Scott Disick is threatening to let the cat out of the bag. Apparently, Kourtney Kardashian's baby daddy is reportedly threatening to reveal Kylie and Kendall Jenner's rumored pregnancy and drug secrets.

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According to OK! Magazine's print edition this week (via Celebrity Dirty Laundry), Scott is allegedly fed up with the girls' antics and is seeking "revenge" after everything that he's supposedly endured with the Kardashian family.

A source told the magazine, "After eight years with the Kardashians, Scott Disick is ready to reveal their most scathing secrets. Scott wants revenge for all of the crap he has endured. He feels like he has been intentionally made to look like the 'bad guy' to boost ratings. Scott has told Kourtney that if she tries to take their kids and their money, he will let loose enough information humiliate her to take down her entire family."

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The insider also added that Kendall allegedly has a drug problem as she occasionally "dabbles in cocaine" and prescription drugs. The source also adds that Kylie's pregnancy scare was supposedly true and that Scott is very close to revealing everything in a tell-all interview.

Of course, neither Scott nor the Jenner sisters have made any comments about the rumors.

According to In Touch Weekly earlier this month, a source close to the Keeping Up With The Kardashians star apparently confirmed the pregnancy news, although Jenner herself has yet to say anything. What's more, it doesn't look like her mother Kris Jenner is too pleased with the news, either.

An insider told the site, "She was screaming, telling Kylie she was going to kill her and that she never should have let this happened. She tried to ban Kylie from dating Tyga. Kylie told her to mind her own business."

Tags: Kylie Jenner Kendall Jenner