Farrah Abraham and Amber Portwood ... well, they're not on the best of terms.

And yes, that is the understatement of the year.

Their history is a little complicated -- they used to be friends, believe it or not.

But something happened in the past year or so. Perhaps it was Simon Saran's endless bashing of Amber and Matt Baier, or perhaps Farrah remembered that she's incapable of being a decent person and decided to throw her under the bus.

Whatever it was, it caused Farrah to feel comfortable saying that Matt looks like a pedophile during the reunion show of the last season of Teen Mom OG.

And that caused Amber to lose her mind, and that kicked off the feud that is still thriving, even today.

The two Teen Mom ladies have gone back and forth for months now, with the latest spat taking place on Instagram.

Farrah made a post about flipping houses, which is an activity that Amber and Matt also enjoy. One of her followers commented, telling Farrah that she was copying Amber.

Farrah replied with some barely coherent comment about how she was actually going to make money flipping houses, "like Amber and Matt wish they could."

And Amber did not appreciate it.

She replied to Farrah, writing "Don't comment on a real woman sweetheart! I gave you family bootcamp lol and I make money on my houses ... I don't lose money like your other house."

"This is why you shouldn't do cocaine and drink all the time okay honey. Your forgetting things like you know That guy you met online in NY??"

"Keep it up and I will literally stop all this with one interview and text messages," she finished. "Don't play with a true Queen sweetheart."

So that's a little confusing, but the gist is that Amber has dirt on Farrah, and also that she accused her of doing cocaine and drinking "all the time."

And that's why Farrah's father, Michael, decided to step in.

In a lengthy interview he did, Michael defended his daughter ... but mostly he just did his best to destroy Amber.

About Amber's comment, he said "Who cares about something that might have happened or not ... years ago and of texts involving other parties."

"It's also funny that Amber is threatening someone about behaviors that her fiance and her beg people to forget about in one statement, and in another statement use an excuse for their behaviors."

OK, that was a pretty solid burn.

He added that "If she had any sense she would be concerned and would be managing their responsibilities for their actions last fall -- attempted assault, assault, damaging government property, and destroying government property."

The "government property" in question, by the way, was Michael's hearing aids, issued by the Veterans Administration.

He also claims that "Amber and her fiance have one of the biggest cases of 'Abraham Envy' I have ever witnessed!", and that Matt's book has an entire chapter about the family.

According to the man partially responsible for unleashing Farrah onto the world, Amber "can't control herself and she is full of rage/violence."

Michael wasn't above cheap shots either: he also referred to Amber as a "Ms. Marilyn Monroe want-a-be."

"Want-a-be." How rich.

Honestly, instead of taking the time to say all this about Amber, he should be considering how his own family became so broken and, you know, trying to fix it.

To be fair though, the same could be said of Amber.

Oh, what a complicated world Teen Mom has built ...