Paul Ceglia - the man suing Facebook because he reckons he owns most of it - clearly has a memory like a sieve.
The reason he didn't come forward before now, he says, is that he clean forgot he'd signed a contract giving him a majority shareholding in the largest website in the world.
Ceglia is claiming he owns 84 percent of the company on the basis of a contract signed in 2003.
But apparently the contract got shoved in a drawer, and Ceglia put it out of his mind. He didn't remember it when Facebook became the biggest social networking service ever, he didn't remember it when his old pal Zuckerberg became one of the richest men in the world.
But when state police arrested him over complaints relating to his wood-pellet business, Ceglia started looking through old files to see if he'd mislaid any assets. And, guess what, he had!
"If this thing hadn’t happened the way it happened, no way I would have ever started looking through these ancient folders," Ceglia told Bloomberg.
"That contract would just be sitting in there gathering dust."
Facebook is dismissive, to say the least, about Ceglia's claims.
"Ceglia has refused to produce the original contract and the copy we’ve seen is a forgery, with inconsistent margin sizes, inconsistent font sizes, and other glaring discrepancies," it says. But ceglia has vowed to fight on.
You know what? I just remembered I own most of Apple. And, come to think of it, I'm sure I used to have Google kicking about in the back of a drawer too. Now, would you excuse me a minute?