Say the library has a copy of a rare book you want to study

Thinking on your feet, you tell here that the town library has the only copy of a rare book you want to study. Good thinking, that's a more than reasonable reason.

"Oh really?" she says, arching an eyebrow, "And what is this book called?"

She leans even closer to you, expression expectant, smirking knowingly. Shit, she's calling your bluff, you'll have to think up a title fast - but wait, why are you lying and feeling so flustered about this anyway? You're not normally *this* awkward around women. Is it the thought of Tony's stupid stories? That cleavage, or her little trick with her tongue? Tongue wiggling can't be hypnotic or anything, can it?