My best "loonier-than-thou" line I've used. "You know, your voice sounds JUST like the ones in my head! Listen" and leaned my head towards her.
She was switching seats in seconds.
Of course, had she said, "You know, you're right!" I would have been in BIG trouble!
------------------
"I will not be pushed, filed, stamped, indexed, briefed, debriefed or numbered. My life is my own."