But what if the woman is in a long-term relationship and, instead of making explicit financial requests, obtains something else—like a marriage proposal? “That could be the basis in divorce court,” Iyer said. “Because in civil court you are trying to get some non-incarceratory repair.”

Famed celebrity divorce attorney Raoul Felder agreed. Felder has represented notables like former New York City mayor Rudolph Giuliani, and is currently representing rock star Liam Gallagher, formerly of Oasis, in a paternity and child support case. When asked about the sale of positive pregnancy tests, Felder replied, “I think it’s a new wrinkle on an old scam.” He added that in the old days, some women would say, “I’m pregnant. I have to get rid of the baby. It’s going to cost me $2,500” and might tell this to multiple men for financial gain. “This is a 2013 [remix]. This is corroboration too.”

Felder explained that corroboration is important, because historically such situations devolved into a “he-said, she-said” dispute when it came time to sort out the facts. But ordering a test on Craigslist would likely create a paper trail, making it easier to establish fraud, and premeditation.

Echoing Iyer’s interpretation of the law, Felder explained that someone using a fake pregnancy to obtain financial benefits from someone she is not married to would be committing “larceny by trick or device. They tricked someone out of money. That’s a criminal offense.” But if a couple marries, and the marriage was based on a lie regarding pregnancy, “That’s what they call fraud in the inception or fraud in the inducement if you get married.” Such a case is comparable to couples that divorce or seek annulment on the grounds that one spouse lied to the other about wanting to have children in order to enter the marriage.

But Felder believes that purchasing a fraudulent pregnancy test constitutes “an overt act—and potential conspiracy too.” He is not the only one.

Of those selling the pregnancy tests, Mackey said, “I would hazard to guess that a creative prosecutor would try to go after someone like that on complicity, conspiracy, and aiding and abetting,” further explaining that those terms encompass “criminal liability once removed.”

“A conspiracy is basically an organization whose purpose is to commit some sort of unlawful activity,” Iyer explained. “You can conspire to sell drugs. You could conspire to sell false pregnancy tests.” An example would be if a woman agreed to sell her positive pregnancy test to another woman who explicitly said she would use it to target various men for money and would split the subsequent proceeds with the woman who sold her the test. Iyer compared faking pregnancy to prostitution, in that both the buyer and seller can potentially be open to prosecution.

Perhaps sensing shaky legal ground, one Craigslist pregnancy test seller made a point to say in her posting:

“I don’t care what you use it for. Not my business! : )”