Farrah Abraham, the latest (and perhaps last) name from MTV's Teen Mom to be on everyone's lips since the fiasco with Amber Portwood took her out of the headlines long enough to serve her five-year prison sentence, is causing her own brand of trouble, calling Portwood's ex boyfriend, Gary Shirley, a "pig" on the show's series finale, releasing a panned music video, and even penning a book, My Teenage Dream Ended, that reportedly badmouths Derek Underwood, her late boyfriend and the father of her daughter, Sophia.

Underwood died in December of 2008 just months before baby Sophia was born, and now Abraham's book suggests that Derek was often "thoughtless and immature" around her, a statement that sparks the fury of Derek's mother, Stormie Clark, who has reportedly had a long feud with Abraham that involves, among other things, custody rights.

“Derek loved Farrah. He would have never laid a hand on her. They argued just like any normal teenage couple, but his is not the person she is portraying him to be,” Clark said, reports Examiner.com. She also claimed that Farrah was rude to her family and even abusive toward Derek at times.

In the meantime, Abraham (almost certainly inadvertently) distracted attention away from her ongoing battle with Clark by castigating Shirley, Portwood's former boyfriend and the father of their child, Leah, on Twitter after a confrontation between Portwood and Gary aired on the series finale of Teen Mom.

"What a pig! You're horrible; go get mental help for Amber's sake P.O.S.," Abraham tweeted, later adding, "To be honest, Gary is so negative and I don't see how he is better to raise Leah then Amber. Get the point Gary! Learn to focus on Leah."

Shirley took the bait. "@F1abraham go make another hit single or treat your parents like sh–. Always stuck up for you — not anymore," he tweeted back, referring to Abraham's recently released single, "On My Own," which has yet to elicit an even moderately complimentary reaction.

Shirley later checked his temper, however, tweeting again, "Sorry Farrah. But you need to be nice to people. Sorry for my tweets not who I am. @F1abraham."

For more on Teen Mom and related stories:

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'Teen Mom' Amber Portwood Sentenced To Five Years In Prison

'Teen Mom' Jenelle Evans Violates Probation

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