Amber Portwood has been stuck in some pretty bizarre circumstances thanks to her fiancé, Matt Baier, and his past (and present) indiscretions. But this? It might be the strangest. Apparently Amber is about to become a grandma, because one of Matt's many kids is expecting!

According to a report from Radar Online, one of Matt's sons, Chris, is expecting his first child -- and unfortunately, it sounds like he's following in his dad's footsteps on this one. When Chris's baby mama, MaDonna Stands, talked to the site, she revealed that Chris has disappeared now that she's pregnant.

But these days, Chris is living with Amber and Matt so he can deal with his addiction. MaDonna doesn't expect him to show any responsibility to her or their child -- who, by the way, was apparently totally planned. But if he does decide to step up, that puts Amber in the role of grandma at 26 years old. Whew!

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However, MaDonna's expectations of Amber and Matt as grandparents are pretty low. She told Radar:

Look at their parenting, I don't expect them to be any better as grandparents. I want nothing from them, I never did. I don't want them in my child's life. Somehow Chris was the victim in our relationship, but I understand that he wants them to feel bad.

And according to Chris? He's not in love with MaDonna, but he does want to be a father to their baby. We'll have to see what happens -- and hopefully, it all plays out on Teen Mom OG in the near future.

Image via MTV