You wouldn’t expect a baby to work. Unless that baby is actually a 30-year-old man who just likes wearing diapers and drinking juice from a bottle.

If that’s the case, the federal government is probably going to start asking questions.

That’s what happened to Stanley Thornton Jr. of California after he was featured on a National Geographic show called “Taboo.” Thornton, who sleeps in an adult-sized crib and has a roommate who plays the role of mother, collects disability benefits.

He says he’s unable to work, but Sen. Tom Coburn of Oklahoma isn’t buying that line. He’s calling for an investigation, saying Thornton can work, considering that he built a giant crib, drives himself on errands and determines when he should wear grown-up clothes.

The senator also wants to know why Thornton’s roommate, a former nurse, is collecting social security benefits when she is able to take care of an adult baby.

Thornton isn’t taking this lying down — giant crib or not. He wrote a letter to the Washington Times threatening to take his own life if his social security benefits are canceled:

“You wanna test how damn serious I am about leaving this world, screw with my check that pays for this apartment and food. Try it. See how serious I am. I don’t care,” the California man said. “I have no problem killing myself. Take away the last thing keeping me here, and see what happens. Next time you see me on the news, it will be me in a body bag.”

On the “Taboo” show, Thornton said he likes to be treated like a baby because of “love, affection and safeness.”

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