In case you were somehow confused and thought Lindsay Lohan was psychologically sound, here's some clarification: she's a walking macadamia, and now her ex Samantha Ronson's mom is saying so publicly.

SamRo's momma, Ann Dexter-Jones, told The Daily Mail about one incident in particular that freaked her out.

The couple and Dexter-Jones were at an afterparty for a Dubai hotel grand opening when Lilo threw a tantrum. Like, a literal tantrum.

"Suddenly, without any warning, Lindsay flung herself on to the thick carpet and started to roll around screaming like a child," Jones recalled.

"It seemed she was upset that people, including Samantha, were not paying her enough attention. To my mind, it was classic psychotic behavior. I took Lindsay aside and told her not to make a spectacle of herself. She was clearly out of control and spoiling for a fight."

"I know stuff, but I don’t want to go into it," she added, somewhat hypocritically considering she was giving an interview about Lindsay Lohan. "I just knew that it was not a good place for my child to be, but sometimes a parent’s objection only makes it more exciting," she said of the romance.

"When I saw for myself just how volatile Lohan was, I realized that the relationship was not healthy ... the morning after her tantrum -- and believe me, that was not the worst of it –-- I told them both that I could no longer support them as a couple, that I no longer approved of them being together and that Lindsay was no longer welcome in my home."

We're sure that went over well.

“I saw how much pain my daughter was in and that she was suffering deeply," Dexter-Jones explained. "She is a very Zen person and not used to the kind of turmoil that Lindsay seems to thrive on.”

Since then, Lohan's gotten arrested a bunch of times, denied she's into chicks and gotten into more drama over DJs.

Oh, and she's now being used by her ex's parents - not just her own - to sell things like jewelry and books. Keep it classy, Ms. Jones.