Farrah Abraham, Kourtney Kardashian

It's a war between reality TV moms.

After Kourtney Kardashian revealed her pregnancy last week, Teen Mom star Farrah Abraham tweeted, "Im Shocked Kourtney Kardashian is pregnant again, Did she not learn anything from TEEN MOM? Maybe its a fake pregnancy like kims wedding. SAD."

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Kardashian, 32, and her boyfriend Scott Disick, 28, both shot back at the 20-year-old MTV cast member.

"Why would I have anything to do with teen mom? I'm 32 years old! I may look young, honey, but don't get it twisted. :)" wrote Kardashian, co-star of Kourtney and Kim Take New York. Disick followed up by writing: "We're not teenagers ya [bleep] moron."

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Abraham later "clarified" by tweeting, "4 all who misunderstood: regards to kourtney K.~ I hope she takes her relationship w/her boyfriend more serious 4 their children-takecare." She later added, "caught wind of these dramatic articles, w/ loser scott disick or some boyfriend of kourtneys ... Great dad! NOT."

Kardashian and Disick already parents are to 23-month-old son, Mason.