A LiveJournal user says the brilliant mind behind the crazed tweets of celebrity mom Dina Lohan is a 24-year-old Michigan man named Matt Cherette. Cherette, who's confessed, has a career in Hollywood awaiting him.

Earlier today, we wondered whether Dina, the mother of Lindsay Lohan, was tweeting for real. The constant complaints about "haters" and deranged defenses of her daughter, not to mention the sheer volume sustained over the past two weeks, seemed nearly impossible to fake.

The key word being "nearly." Cherette, a relative newcomer to Twitter, seems to have quickly learned the potentials of this new storytelling medium. One thing the Lohan impostor quickly figured out: By pretending that Dina didn't get the service's 140-character limit on posts, he'd be able to draw a small army of enraged Twitter nerds eager to correct Lohan's gaffe.

According to our tipster, who says he's privy to some of Cherette's private postings on LiveJournal, Cherette has been posting comments crowing about his coup. Here are screenshots:

Assuming this prank doesn't have yet another layer to it, congratulations, Matt. You have endless opportunity ahead of you getting paid to pretend you're a celebrity.

Update: We just heard back from Cherette, who's admitted to the stunt and demonstrated that he controls the Twitter account. "What would you like to know?" he asks. Leave questions for him in the comments. Cherette also says he's the person who created Rosie O'Donnell's fake Twitter account.