I've always wondered what they are expecting to see on the other half of the page - particularly after they've unfolded a few hundred of them.

Are they really afraid that the one time they don't unfold the page to look at non-BP info there will be something incriminating or relevant? A printed folding gun and ammo or something?

I've been tempted to print it out on really long paper (maybe on the graphics printer at work) and fold it up accordion-style, with just the BP displayed. Maybe a few bits of tape. I wonder how much time and effort they would expend unfolding it to ...what? Clear it? Ensure that it presents no threat to aviation security?

Or just plain nosiness? Because they can? Because they really aren't focused on the mission, they're focused on fake IDs or funny writing?