It's many people's worst nightmares!

A massive snake was found hiding in a couch at a San Diego area home. "This guy calls me, is pretty frantic and he's like there's a snake in my couch," says Alex Trejo, of So-Cal Rattlesnake Removal.

Alex Trejo owns a rattlesnake removal company and says he gets calls like that all the time. But says even he was surprised by what he found -- a seven-foot Vietnamese Blue Beauty Rat Snake coiled up behind a cushion.

While the snakes aren't venomous, Trejo says they can be a bit defensive.

As for how it got there, that's still a mystery.