I mean, they asked for my login information to search my Facebook. I actually declined, but they still ran through all the public information and connections I had.
"I'm sorry, I don't use Facebook as it seems an invasion of personal privacy"
or
"Ok, here's my Facebook account" and then give them some uber-sanitized account that just has photos of kittens and messages on your mom's wall about her cookies.
It works best if you're actually in California, but even if not, it might give them pause.