Nine times out of 10. Why? Because, God and Darwin love ‘em, moms are irrational and fierce protectors of their children who will do anything for their kids.

Which on one hand is good, but on the other is exactly why when you see “Mom Seeks Law…” in a headline, it’s going to be a bad idea and go way too far.

Which brings me to today’s little venture into Big Mother politics.

Dallas-area mother challenges Texas law allowing parents to show children pornography

Texas’ devotion to protecting parental rights allows moms and dads to provide pornography to their children.

Now a Dallas-area mother is trying to change that, saying that her ex-husband faces no punishment for showing their young daughters online images of three-way adult encounters.

She’s getting support from a variety of sources, including a Panhandle prosecutor who wanted to charge the man but concluded he had no way to win a case.

No, I don’t support showing porn to kids, but yes, how I teach my kid about sex education is not your business or the state’s business and blah blah blah. But this isn’t a political argument.

For starters, the sloppy writing suggests it’s an established fact that the dad in question did what the sentence says. It is not. It’s an allegation. And when we read further into the story, we learn it’s an allegation from a mother who did not have custody of her own kids.

This is big red flag No. 1. Divorces are nasty, and child custody fights even more so. Otherwise honest mothers will tell you they will do anything to keep their kids, and that includes lying. Especially if they’re lying about ex-husbands.

Red flag No. 2 — she didn’t have custody. When a mother doesn’t get primary custody or joint custody of kids, almost invariably there’s something really ugly going on with her.

Red flag No. 3 — the scenario described further down in the story doesn’t pass the smell test:

The Dallas-area woman said her three grade-school-age daughters were living with their father earlier this year when he started drinking, woke two of them late at night and showed them porn on his computer. They later told a counselor, who alerted authorities. Amarillo police investigated, found the girls believable and sought advice from Farren’s office before proceeding.

This doesn’t add up. I’m not saying it’s impossible, but it’s improbable. As described in this admittedly poorly reported and badly written story, it doesn’t fit the profile.

It does, however, fit the script of someone trying to get back custody of their kids.

As for “Amarillo police investigated, found the girls believable and sought advice from Farren’s office before proceeding” need I remind you that Fort Collins police thought the Balloon Boy’s family was credible until the kid admitted on morning television it was a hoax?

So given all that we’ve been presented by the paper, I call BS on this woman.

Do kids need to be protected? Of course.

But regardless of whether this lady is lying, do we need the kind of laws that result from crusading moms? Absolutely not.